Wednesday, October 28, 2009

Ares I Rocket Launch a Soaring Success!

NASA Ares I Launch - 10-28-09

NASA Ares I Launch - 10-28-09

NASA Constellation Program

NASA Ares Concept

CAPE CANAVERAL, Fla. —  At 11:30 a.m. Wednesday morning, the Ares 1-X experimental rocket — the next-generation of America's space flight program — blasted off flawlessly through clear skies at Cape Canaveral.

This launch shows how challenging rocket science really is: Blue skies over the launch pad in Florida hid a variety of challenges, including static-filled clouds and high-altitude winds.

Launching a rocket through these conditions isn't like a plane taking off from a landing strip: It's more like shooting a rubberband through a keyhole from across a parking lot.

At 11:26, NASA resumed the 4-minute launch countdown that had been on pause since 8 a.m Tuesday morning. The ignition system armed, the water and electrical systems activated, and at 11:30 a.m., the Ares 1-X experimental rocket blasted off through clear skies from NASA's launch pad in Florida.

The ship passed Mach 2, achieving speeds of over 1,540 mph. Then, at 22.2 nautical miles up in the air, "burnout" occurred, a stage at which the two segments of the rocket separate and the capsule falls back to Earth.

The test rocket includes a real solid-rocket first stage, with a mock second stage and dummy Orion crew capsule on top to simulate the intended weight and size of Ares I. Ares I-X is the tallest booster in service or about to fly and stands about 327 feet high — 14 stories taller than NASA's space shuttles.

This rocket could eventually take man into space, back to the moon. In an actual moon launch, the second stage of the rocket will contain the liquid propellant that carries the capsule further into space, and ultimately into orbit.

Clouds, snagged tethers and even a misdirected cargo ship within the danger area in the Atlantic Ocean contributed to an eventual postponement in Monday's scheduled launch of the Ares 1-X.

Check out the article at Fox News.

It's nice to see NASA's Constellation Program moving right along ahead of schedule. It would be really nice to see American astronauts avoid having to hitch a ride on Russian rockets!

Check out these interesting links:

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Tuesday, September 15, 2009

Crop Circles!

Most Complex Crop Circle Ever Depicts Pi

Astronomical Crop Circle

3D Crop Circle

3D Crop Circle

Jellyfish Crop Circle

Google's homepage is today given over to a "doodle" showing a flying saucer hovering over crop circles. The word "Google" is spelt out in several crop circles, with what appears to be a tractor completing the letter "L".

The internet giant also posted a tweet on its Twitter account with the map reference 51.327629, -0.5616088, which eagle-eyed sci-fi fans have identified as the centre of the small town of Horsell in Surrey. This was the spot where HG Wells set the first UFO landing in his novel The War of the Worlds.

Everyone's trying to read deep significance into this. Is it about abduction? Or aliens? Or Horsell? Or just crop circles? No. It's almost certainly a viral marketing campaign teasing people ahead of some launch in a week or two. One possible explanation is that it's trailing an online "happening" that will coincide with the 143rd anniversary of Wells's birth next week.

Crop circles were once fascinating additions to the English countryside, but now they have become tacky vehicles for corporations to advertise just about anything. A cottage industry has grown up with groups of circle-makers ready - for a price - to reproduce just about anything. The Royal Bank of Scotland, Disney, NBC, UKTV, Red Bull, Greenpeace, Microsoft, Nike, Shredded Wheat, Pepsi, Weetabix, the BBC, The Sun, Mitsubishi, O2, Big Brother, National Geographic, and the Discovery Channel have all paid to emblazon fields with their signatures.

Check out the article at Guardian.co.uk.

Cool art! Is it alien? I don't think so... but, cool, nonetheless!

Check out these cool Crop Circle links:

Check out today's Google art:

Google Crop Circles 09/15/09

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Tuesday, July 28, 2009

How Humans Will Get to Mars

Mission to Mars

Mission to Mars

Mission to Mars

Mission to Mars

As the 40th-anniversary celebrations of the moon landing end, a human voyage to Mars remains a holy grail for NASA.

"We're still looking at human exploration of Mars as one of the goals of the future at the top level," said NASA researcher Bret Drake with Lunar and Mars Integration at Johnson Space Center in Houston. "Having a human actually set foot on another planet would be one of the greatest adventures possible, one of the greatest monuments to history."

A crewed mission to the red planet is a daunting challenge that lies at the edge of current technological capabilities and possibly beyond. Still, NASA keeps a strategy to go there and constantly keeps up to date with new ideas.

"Mars is one of those targets of fascination that has been around a long time," Drake said.

How to get there

A voyage to Mars would take a crew about 180 days. So far NASA is exploring two options for propulsion there — a nuclear thermal rocket and a chemical engine.

A nuclear thermal rocket, based off designs from the '60s and '70s, would use a nuclear reactor to super-heat a gas and blast it out the nozzle to generate thrust. "It's a very high-performance vehicle, and we think it's very safe, not radioactive at launch, but it is a nuclear system," Drake said. "The idea for the chemical engine is similar to that used on the space shuttle, liquid oxygen and liquid hydrogen. It's a fairly well-known technology, but it's not as efficient as nuclear thermal."

To reach the Martian surface, NASA envisions an aerodynamic lander that flies down with thrusters to help it descend. The ascent vehicle that takes the crew back into space for the six-month trip home will likely rely on a combination of methane and liquid oxygen. "Oxygen is present in the Martian atmosphere in the carbon dioxide, so you can use resources on Mars to make it," Drake said.

Before the crew even gets to Mars, the plan is to send as much cargo there ahead of time as possible.

"That way we can know it's operating right before we ever commit the crew," Drake said. "A Mars mission is not like a lunar mission where you can come home at any time — once they're committed, a crew is out there for years."

By current NASA estimates, a crewed mission to Mars needs to lift about twice the mass of the International Space Station into space — roughly 1.76 million lbs. (800 metric tons) of technology. To launch the equipment, NASA plans on using the Ares V rocket, designed to be the most powerful rocket ever built and capable of carrying about 414,000 lbs. (188 metric tons) to low Earth orbit at one time.

"We're going to try to minimize the amount of assembly needed," Drake said. "The heavy lift capacity we'll have with the Ares V will allow for simple automatic rendezvous in orbit and docking of components."

The crew would ride up in one of the upcoming Ares I rockets before starting the voyage to Mars.

"Having humans in place could bring a wealth of experience and training and the ability to put into context what they see and to make real-time decisions, all things difficult to do with robots," Drake said.

The very habitat the crew stays at on the Martian surface would be sent ahead of time. "You can also do things like produce and store oxygen from resources at Mars beforehand for the crew and the ascent vehicle. You could generate water as well."

Big crew, long stay

NASA envisions a crew of six astronauts for a Mars mission. "That's about what's required for the skills needed — a commander, scientist, engineer, medical officer, things like that, as well as cross-training," Drake said. "They'll need expertise in a wide range of disciplines."

Currently NASA envisions a long stay for a crew at Mars, about 500 days.

"Crew autonomy is vital, because there's an up to 40 minute time delay in communication between Earth and the crew because of the distance," Drake said. "And the crew doesn't have a capability for re-supply — they'll just have what they send ahead or what they bring with them — so when things fail, they'll have to be able to repair them. They must be self-sufficient."

To survive the voyage, air and water need to be completely recycled regularly.

"We're learning a lot on the International Space Station right now on air revitalization and water recovery," Drake said. "What's nice about Mars is that there's carbon dioxide in the atmosphere, so that can help get us oxygen and water for the crew. In terms of food, we're looking at smaller systems, 'salad machines,' to grow food for the crew. Fresh food is not only good for nutrition, but good for the mind as well. A fresh tomato can really boost psychology."

Mental and physical challenges

The long hardship of roughly two-and-a-half years in space with only a few people in a potentially lethal environment will undoubtedly challenge the psyches of Mars explorers.

"The Russians are conducting a test right now that hopefully will shed light on the behavioral sciences aspect of a Mars mission," Drake said. "Looking at other remote exploration endeavors is helpful as well — Antarctica, or submarines — all that feeds into the human behavioral aspects of crew selection."

A key concern for astronauts as well as during the stay on Mars is dangerous radiation in the form of storms of high-energy particles from the sun as well as cosmic rays from deep space. "The best radiation protection material is hydrogen, or water, which is rich in hydrogen," Drake said.

On the surface of Mars, NASA envisions that cargo deployed ahead of time can produce water before the crew arrives to use as a shield during the crew's stay there. On the way to and from Mars, the ship could be configured so that water and food surround areas where crew spend most of their time, but "a 'storm shelter' aboard the ship will be an integral part for short events of radiation that can be lethal," Drake said.

No firm date has been set for any potential Mars mission, but it remains of keen interest not just to NASA, but also others, such as China.

"It's humanity's next step to understanding and expanding our presence outward," Drake said. "We view human exploration of Mars as being an international endeavor, most likely not limited to just one country, but probably of global scale.

Check out the article at Fox News.

If human exploration and colonization of Mars is a subject that interests you, I highly recommend Kim Stanley Robinson's Mars Trilogy - consisting of Red Mars, Green Mars, and Blue Mars. In this awesome work of science fiction, Robinson delves into the technological, social and political aspects in a realistic future of Martian colonization and terraforming. You'll find no light-sabres or warp drives in these books... just down-to-earth, well-written sci-fi!!!

Kim Stanley Robinson's Mars Trilogy

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Monday, July 20, 2009

40th Anniversary of the Apollo 11 Landing!

Apollo 11 40th Anniversary - 2009

Apollo 11 40th Anniversary - 2009

Apollo 11 40th Anniversary - 2009

Apollo 11 40th Anniversary - 2009

Apollo 11 40th Anniversary - 2009

Apollo 11 40th Anniversary - 2009

Apollo 11 40th Anniversary - 2009

Apollo 11 40th Anniversary - 2009

CAPE CANAVERAL, Fla. - Neil Armstrong moved slowly down the ladder. Getting to the moon had been a long time coming. He was an Ohio pilot who came from the same soil as Orville and Wilbur, who ejected from a crippled jet fighter over Korea just after turning 21, who flew seven test flights in the X-15 rocket, who saved himself and a crewmate in Gemini 8, who ejected from a lunar landing trainer a split second before it crashed.

In the 1950s and '60s, he flew about every propeller, jet, rocket and helicopter built by his country. To say that this Midwestern farmboy was the best test pilot in an emergency ever was an easy argument. That’s why chief astronaut Deke Slayton chose Neil Armstrong to take the first step on a small world that had never been touched by life. A landscape where no leaf had ever drifted, no insect had ever scurried, where no blade of green ever waved, where in the silence of vacuum even the fury of a thermonuclear blast would sound no louder than a falling snowflake.

More than 200,000 miles away, billions of eyes stared at the black-and-white TV picture. They watched Neil’s ghostly figure move like a spacesuited phantom, closer and closer, planting his boots in moondust at 10:56 p.m. ET, July 20, 1969.

All motion stopped. "That's one small step for a man," Neil said slowly, "one giant leap for mankind."

Neil gathered several ounces of rock and soil from the lunar surface and stuffed the invaluable material in a suit pocket. The plan was, after Buzz Aldrin joined him, they would remain outside for two hours, planting experiments and collecting primarily rocks, but if something should go wrong, at least they would have a tiny bit of the moon.

With the contingency sample safely tucked away, he took the time to look around. “The moon has a very stark beauty all its own,” he said, almost whispering. “It’s like much of the high desert areas of the United States. It’s different, but it’s pretty out here.”

What we on Earth did not know at the time was exactly why history’s first moonwalk began when it did. NASA had scheduled a four-hour sleep and rest period for Armstrong and Aldrin in the lunar module, or LM, and we were told to wait.

It turned out that we were hoodwinked.

The truth came out last November. NBC News President Steve Capus was giving me a dinner to celebrate my 50 years at the network. Former astronauts Neil Armstrong, John Glenn and Edgar Mitchell flew in, along with other survivors of the old days. Following dinner and a short ride to one of our favorite watering holes, Neil spilled the beans.

“Of course we wanted to get outside as soon as possible, before an emergency. But we thought we would need several hours to get the LM’s fluids and systems settled,” he explained.

"For several hours you reporters would have been speculating, guessing about possible problems, and we didn’t want one of you inventing stories,” Neil grinned. “That’s why we put in a four-hour sleep and rest period we hoped we would never use.”

We laughed, and Neil laughed, and he added, “Everything went much faster than we expected.”

Most of us were having dinner when the call came that the moonwalk would begin early. We rushed back to our microphones and reported the history-making event of our lives.

Buzz takes his turn

While Neil took his one small step, Buzz Aldrin stayed aboard the lunar module, which they named Eagle, to monitor its systems. That was his duty as lunar module pilot, and that was one reason why he was the second man to walk on the moon. When he and Mission Control were convinced that the Eagle was safe and purring, he joined Neil on the surface.

“Beautiful, beautiful! Magnificent desolation,” Buzz said as he stared at a sky that was the darkest of blacks above a landscape that was many shades of gray, a touch of brown, and utter black where the rocks cast their shadows. No real color, not even the places lit by the unfiltered sun.

Then there was the weak gravity. They weighed only one-sixth of their Earth poundage, and Neil reported, “The surface is fine and powdery. It adheres in fine layers, like powdered charcoal, to the soles and sides of my boots. I only go in a fraction of an inch, maybe an eighth of an inch, but I can see the footprints of my boots and the treads in the fine, sandy particles.”

Was the moonwalk faked? No!

It would be these highly defined footprints that would set some armchair physicists crying the moonwalk was a fake. In the years to come there would be those who would claim Apollo astronauts never went to the moon. They said all of it was done on a movie set in an Arizona.

It occurred to me that if NASA had been so deviously smart to persuade 400,000 Apollo workers to lie, to persuade the Russians to lie, to persuade the people tracking the lunar flights with giant radio antennas around the world to lie ... well, if NASA got away with it once, would the agency be so stupid as to try to get away with this world-class hoax nine times?

The claim is too dumb not to be laughable. It is sad. We as a people would rather think the worst of ourselves than the best.

Nevertheless, scientific investigators investigated.

Myth-believers claimed that Neil and Buzz could have only left such firm, defined bootprints in soil with moisture — and everyone knows there is no water on the moon, right?

Wrong. There’s now evidence there could be water ice at the poles, but that hasn’t a thing to do with the first footprints on the moon.

Close examination of the lunar soil back on earth showed it to be virgin. The grains still had their sharp edges. They had not been rounded off by wind and erosion in an atmosphere. In their vacuum the sharp edges of lunar soil cling together, leaving a smooth surface much as moist sand does on a beach.

"Where were the stars," the myth-believers ask. "Where’s the crater carved out by Eagle's descent rockets during landing?"

The cameras that NASA sent to the moon had to use short-exposure times to take pictures of the bright lunar surface and the moonwalkers' white spacesuits. Stars’ images were too faint and underexposed to be seen, as they are in photographs taken from Earth orbit. And why didn’t the descent rockets carve out a crater? Their thrust was simply too weak to make a huge dent in the lunar surface.

So much to see, so little time

For Neil and Buzz there was so much to see and do and so little time. They moved their television camera 60 feet from Eagle. This would help Earth’s viewers see some of the things they were seeing and let them watch them going about the business of setting up Apollo 11’s experiments.

The two had problems jamming the pole that held the American flag into the lunar surface. Though a metal rod held the flag extended, the subsurface soil was so hard that they had to bang and push on the pole to get it to barely remain erect. Their forcible actions left the flag’s staff rocking back and forth for an unusual length of time.

Ah, said the myth-believers. That’s wind blowing the flag, and everyone knows there’s no wind on the moon. Right?

Right, there’s no wind on the moon. No atmosphere, just vacuum. And everyone knows an object that is forced into repeating motions in vacuum repeats many more times than it does in atmosphere. Atmospheric drag dampens movement. Vacuum is nothing. No resistance.

The flag’s motion was later duplicated in a vacuum chamber at the Marshall Space Flight Center in Huntsville, Alabama.

No fraud, no conspiracy.

With Old Glory standing, Neil moved off to take more pictures while Buzz set up a seismometer to gather information on quakes and meteorites hitting the moon. An instrument to measure the flow of radiation particles inside the solar wind and a multi-mirror target for returning laser beams fired from Earth were deployed — laser reflectors that have been used by American universities and Russian institutes and other global investigators to determine the distance between Earth and the moon to the inch.

Those laser reflectors could not have been used if Neil and Buzz had not put them there.

Just days ago, NASA's Lunar Reconnaissance Orbiter, launched last month from Cape Canaveral, returned its first images of the Apollo moon landing sites. The pictures show five of the six Apollo descent stages, including Apollo 11's, resting on the moon's surface. The Apollo 14 landing area shows a faint trail of Alan Shepard and Edgar Mitchell's two-mile round-trip march to Cone Crater with their "rickshaw."

Guess we really did go to the moon, huh? So much for the myth-believers and the conspiracy theorists.

In the lunar dust, the two Americans placed mementos for the five astronauts and cosmonauts who had lost their lives, and Neil read the words on a plaque mounted on Eagle's descent stage: “Here men from the planet Earth first set foot upon the moon, July 1969, A.D. We came in peace for all mankind.”

Neil and Buzz gathered about 46 pounds of lunar materials, and once everything was loaded for flight back to Earth, they shut down the first moonwalk.

Was Buzz Aldrin a publicity hog? No!

Because of the primitive state of television at the time, most of us couldn’t wait for Apollo 11 to get back with all the great pictures the crew had shot. That in itself was the beginning of yet another controversy.

When all the film had been developed, there was only one image out of the 121 Hasselblad still-camera photographs that showed Neil on the moon, plus the film from a 16mm movie camera that was set up to peer out one of Eagle's windows. Neil had taken great shots of Buzz moving about, Aldrin took only one rear shot of Neil stowing samples for return to Earth.

Why?

Was Buzz angry?

No.

“I was the one with the camera,” Neil told me. “His job was to set up the experiments. He had much to do. Nothing more than that.”

Two months ago I had the same conversation with Buzz, and got a similar response. “NASA should have trained us in public relations,” he said with passion. “We were just doing our job.”

Simply put, MIT-educated Buzz Aldrin was one of the smartest guys in the astronaut corps.

During Project Gemini, spacewalker after spacewalker had failed. They tired quickly, and Buzz studied their problems. By the time he stepped into space, he had invented the tools and methods needed to walk in a vacuum. For example, he fashioned a pair of golden slippers that could be placed where needed to hold his booted feet. A spacewalker needs that — something to hold his or her feet in place — to keep stable attachment with the spaceship. Otherwise you will thrash about wildly. During Gemini 12, Buzz Aldrin whistled and sang through his spacewalk assignments.

And when he returned from the moon, when one of those moon-conspiracy theorists shoved a Bible in Aldrin’s face and ordered him to swear on it that he walked on the moon, Buzz decked him. Fellow astronaut Wally Schirra, one of the original Mercury 7, renamed him Rocky. That’s my kind of man.

After 51 years on the job, after covering every spaceflight flown by Americans, I can report that Neil Armstrong and Buzz Aldrin — and Michael Collins, who kept stoking the home fires on board the Apollo 11’s command ship Columbia — were the best Earth had to offer.

History, this time we got it right.

Check out the article at MSNBC.

For more info, check out the following links:

Check out today's Google art:

Google Apollo 11 Landing 40th Anniversary 2009

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Tuesday, April 07, 2009

Scientists Race to Prevent 'Catastrophic Disaster' in Space!

Space Debris in Low Earth Orbit

In 1970, Marshall Kaplan, then an aerospace engineering professor at Penn State, had a peculiar dream — he wanted to retrieve Sputnik, the world's first orbiting satellite, from space.

Sputnik had been launched by the Russians in 1957, and by 1970 it was no longer operational. Kaplan wanted to go get it.

NASA had never considered space retrieval before, but it thought it was a good idea. Kaplan got the job, but it didn't work out — because the time frame was too short. Sputnik, nearing the end of its life cycle, was already about to deorbit — the technical term for what happens when an object circling the Earth gets close enough to be caught in gravity and burned to cinders in the atmosphere.

But that didn't mean Kaplan needed a new line of work. In fact, his work was just beginning.

For the next 40 years, Kaplan, now a senior researcher in the space department at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md., has been figuring out how to bring down objects from space.

That makes him one of a few dozen scientists feverishly trying to prevent what he calls a "coming catastrophic disaster" — a collision between a manned spacecraft and orbital debris, or space junk, thousands of pieces of which are zooming at thousands of miles per hour 300 to 800 miles above the Earth, ready to take out anything in their paths.

Space junk is anything that's lost or discarded in orbit — everything from the spare glove astronaut Ed White lost on the first American spacewalk in 1965, to the garbage bags jettisoned by cosmonauts stationed on the Mir space station in the '80s and '90s, to the dangerous remnants of a old weather satellite blasted into smithereens by a Chinese missile in 2007.

The probability of a disastrous orbital collision has been on front pages lately. On Feb. 12, a Russian-made satellite smashed into a commercial U.S. telecommunications satellite, creating the second worst mess (after the deliberate Chinese incident) ever in space.

Fortunately, the telecom satellite was quickly replaced, and the Russian "bird" had long been out of commission.

But a month later, on March 13, the two astronauts and one cosmonaut aboard the International Space Station had to scramble into an escape capsule after they got less than 20 minutes' warning that a piece of speeding junk was heading straight for them.

There wasn't time to reposition the ISS, which could have suffered a fatal loss of pressure had the five-inch piece of an old rocket punctured the walls of a living area. Fortunately, the debris missed.

"This is just a taste of what's to come. Experts are saying we could expect a crash every couple of years, but this is an educated guess," says Michael Krepon, co-founder of The Henry L. Stimson Center, a Washington-based think tank that focuses on security concerns.

"We really don't know the scale of the problem — we just know that we've already done serious damage to a zone of space that's essential to our security."

Our fast-paced, hyperlinked world could not exist without orbital relays; everything from phone calls to GPS devices to banking transfers needs satellites to work.

Even more damaging to satellites, and the enormous potential of the commercial development of space overall, could be a ground-based threat — crippling lawsuits over orbital-debris collisions.

"Liability claims killed the private aviation industry," says Peter Diamandis, founder and chairman of the X Prize Foundation, which sponsors contests and awards for private space ventures and innovation. "In space, we're going to be dealing with 'Your satellite killed my satellite' claims. It's going to be a mess."

No ... it's a mess already.

"We're currently tracking 18,000 objects floating through space," says Kaplan. "But that's only objects larger than 4 inches. At 10,000 mph, even a nut or a bolt could do serious damage."

In the microscopic range, there are literally billions of micro-particles around — too small to puncture a spacecraft's exterior, but enough to have already pitted windows on a space shuttle and destroyed a lens on an orbiting telescope.

It's Kaplan's job to figure out how to get all of this down, and it's a big job.

"This clean-up will cost tens of billions of dollars," he says. "It's going to require a whole new space program to pull off. But we don't have a choice. This is just a cost-benefit analysis. If we don't clean this mess up in the next 20 years, we're going to lose our access to space."

Nations are beginning to act. On Feb. 13, the United Nations endorsed seven "Space Debris Guidelines to Curtail Space Debris in the Future."

The guidelines include adding more shielding to spacecraft and giving satellites extra fuel so they can either deorbit themselves quickly (it normally takes decades) or put themselves into higher, less crowded orbits at the ends of their life cycles.

The Colorado-based Secure World Foundation, a space think tank, is calling for a Civil Space Situational Awareness System — essentially a global air-traffic controller that would track everything in orbit so collisions could be avoided.

That sounds like a no-brainer, but it's something of a problem for the Air Force, to use only one example of a governmental authority that naturally has serious concerns about telling anyone where its surveillance satellites are at any given time.

A Stanford study released in late March suggests that future space junk can be minimized by simply forcing nations to "take out their own garbage" by deorbiting anything after it's done its job.

Most experts feel the U.N. recommendations will be ratified by international treaty, or a similar mechanism for good-conduct rules will be enacted soon.

But while all of these ideas are good planning, they don't get rid of the junk that's already up there.

That's what Kaplan spends most of his time working on.

Recently, he conducted a global survey of orbital waste-management ideas. He got over 100 — some pipe dreams, some crack-pipe dreams, but 30 or 40 of them with merit.

One concept that's gotten attention is the "space broom," a ground-based laser that will use quick pulses to singe orbital debris, changing each piece's trajectory so that it deorbits faster. The idea has considerable merit, and considerable problems — how to hit each piece, for one.

"We don't really know where this junk is with any real sense of accuracy," says Kaplan. "We can get within a few meters, perhaps, but that's not enough for a laser."

You could get a lot closer by putting the lasers on a spacescraft, but that would be a space-based weapon, and those are banned by several international treaties.

"Collection by collision" is another possibility Kaplan is earnestly examining.

The idea is simple — coat a spaceship in something sticky and put it into orbit. Think of it as a giant lint roller — debris will naturally collide with the craft, but instead of bouncing off or tearing through it, the junk will simply adhere. The added mass will lower the ship until it deorbits on its own.

And then there are a bevy of independent thinkers eager to jump into the mix.

Retired aerospace engineer Jim Hollopeter was profiled in a recent Wall Street Journal article, which reported that he wants to load aging rockets with water and bring down debris with what would essentially be the world's largest fire hose.

Meanwhile, the folks at Tether Unlimited, a Washington-based aerospace company funded by the Air Force, have created the "terminator tape," basically a pizza-sized box that can be clamped on to to a defunct satellite.

Once attached, the box opens, several hundred meters of electro-dynamic wire unspool and atmospheric drag does the rest to bring the bird down.

There are also nets, and magnets, and a science-fiction treasure trove of tantalization. The bad news is that none of them, even something as low-tech as the terminator tether, comes cheap.

The good news is that many could be "bootstrap"-financing technologies. There's a fortune to be made in space-mining operations, for example in harvesting nickel from the moon.

Diamandis himself believes this future industry will produce the world's first trillionaire, and if the fortunes of the 19th-century "robber barons" are anything to go by, he may not be wrong.

The point is that cleaning debris out of space means learning how to tow objects around space — a fundamental component of any mining operation.

"You don't even have to go that far out," says Diamandis. "Whatever 'waste management' organization gets the contract for space is looking at heaps of valuable material already floating around above us. You have to remember — one man's waste is another's treasure."

Check out article at Fox News.

It seems that wherever we go, humans somehow manage to pollute and litter the environment. When will we ever learn... LEAVE NO TRACE!!!

Be sure to check out NASA Orbital Debris Program Office

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Monday, April 06, 2009

Cosmic Hand Reaches for the Light!

Chandra Nebula PSR B1509-58 - The Giant Hand

Tiny and dying but still-powerful stars called pulsars spin like crazy and light up their surroundings, often with ghostly glows.

So it is with PSR B1509-58, which long ago collapsed into a sphere just 12 miles in diameter after running out of fuel.

And what a strange scene this one has created.

In a new image from NASA's Chandra X-ray Observatory, high-energy X-rays emanating from the nebula around PSR B1509-58 have been colored blue to reveal a structure resembling a hand reaching for some eternal red cosmic light.

The star now spins around at the dizzying pace of seven times every second — as pulsars do — spewing energy into space that creates the scene.

Strong magnetic fields, 15 trillion times stronger than the Earth's magnetic field, are thought to be involved, too. The combination drives an energetic wind of electrons and ions away from the dying star. As the electrons move through the magnetized nebula, they radiate away their energy as X-rays.

The red light actually a neighboring gas cloud, RCW 89, energized into glowing by the fingers of the PSR B1509-58 nebula, astronomers believe.

The scene, which spans 150 light-years, is about 17,000 light years away, so what we see now is how it actually looked 17,000 years ago, and that light is just arriving here.

A light-year is the distance light travels in a year, about 6 trillion miles (10 trillion kilometers).

Check out article at Fox News.

Whoa... awesome photo!!! Let's just hope it stays out there and doesn't head this way, as is predicted in Nine Inch Nail's The Warning, from Year Zero!!!

Nine Inch Nails Year Zero

Check out my Nine Inch Nails: Year Zero post!

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Friday, March 20, 2009

The Science of the Spring Equinox

Spring Equinox 2009

Spring Equinox 2009

Spring Equinox 2009

The first day of spring is no guarantee of spring-like weather, but officially the season's start comes around at the same time each year nonetheless.

Well, sort of.

The first day of spring arrives on varying dates (from March 19-21) in different years for two reasons: Our year is not exactly an even number of days; and Earth's slightly noncircular orbit, plus the gravitational tug of the other planets, constantly changes our planet's orientation to the sun from year to year.

And weather-wise, Earth's seasons have shifted in the past 150 years or so, according to a study that came out last month.

The hottest and coldest days of the years now are occurring almost two days earlier.

This year, spring starts Friday, March 20, because that is when the so-called vernal equinox occurs. Equinoxes (which mark the onset of spring and autumn) and solstices (which mark when summer and winter begin) are points in time and space that mark a transition in our planet's annual trip around the sun.

At each equinox, the sun crosses the Earth's equator, making night and day of approximately equal length on most of the planet. At the equator, the sun is directly overhead at noon on either equinox.

How it works

Earth's multiple motions — spinning on its axis and orbiting the sun — are behind everything from day and night to the changing seasons.

The sun comes up each day because Earth rotates once on its axis every 24 hours or so. Seasons are a result of Earth being tilted 23.5 degrees on its spin axis coupled with the planet's 365-day orbit around the sun.

(At the North Pole, the sun rises only once a year — at the start of spring. It gets higher in the sky each day until the summer solstice, then sinks but does not truly set until late September, at the autumn equinox.)

Imagine Earth as an apple sitting on one side of a table, with the stem being the North Pole. Tilt the apple 23.5 degrees so the stem points toward a candle (the sun) at the center of the table. That's summer for the top half of the apple.

Keep the stem pointing in the same direction but move the apple to the other side of the table: Now the stem points away from the candle, and it's winter on the top half of the fruit.

The very top of the apple, representing the north polar region, is in total darkness 24 hours a day, during that season.

At winter solstice, the sun arcs low across the Northern Hemisphere sky for those of us below the Arctic Circle, and the stretch of daylight is at its shortest. By the time of the spring equinox, days have grown noticeably longer.

At the summer solstice, the sun gets as high in our sky as it can go, yielding the longest day of the year in the Northern Hemisphere.

As long ago as the fourth century B.C., ancient peoples in the Americas understood enough of this that they could create giant calendars to interact with the cycle of sunlight. They built observatories of stone to mark the solstices and other times important for planting or harvesting crops. Shrines and even tombs were also designed with the sun in mind.

More seasonal facts

As we orbit the sun, the part of the night sky that's in our view changes. A given star sets about 4 minutes earlier each night. Over a month, this amounts to two hours.

In winter, this means that we're looking at stars that during the summer were in our daytime sky, overwhelmed of course by the glare of the sun. Since we complete a circle around the sun every year, the stars of summer, such as those in the Big Dipper, are always the stars of summer.

During summer on the top half of Earth, our planet is actually farther from the sun than during winter, a fact owing to our non-circular orbit around the sun. The difference is about 3 million miles (5 million kilometers), and it makes a difference in radiant heat received by the entire Earth of nearly 7 percent.

But the difference is more than made up for by the longer days in the Northern Hemisphere summer with the sun higher in the sky.

Which brings up a common question: If the summer solstice is the longest day of the year, why are the dog days of August typically hotter?

Because it takes a while for the oceans to warm up, and a lot of weather on land is driven by the heat of the oceans.

Check out article at Fox News.

Interesting facts about the equinox... I'm just ready for the nice weather!!!

For more info, check out the Equinox Wikipedia Entry

Check out today's Google art:

Google Spring 2009

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Thursday, January 22, 2009

Engineering Breakthrough = Space Elevator Tech?

Space Elevator Station

Space Elevator

Space Elevator Diagram

Ever since it was first popularized by Arthur C. Clarke, the idea of a "space elevator" has languished in the realms of science fiction. But now a team of British scientists has taken the first step on what could be a high-tech stairway to heaven.

Spurred on by a $4 million research prize from NASA, a team at Cambridge University has created the world's strongest ribbon: a cylindrical strand of carbon that combines lightweight flexibility with incredible strength and has the potential to stretch vast distances.

The development has been seized upon by the space scientists, who believe the technology could allow astronauts to travel into space via a cable thousands of miles long — a space elevator.

They predict the breakthrough will revolutionize space travel. Such an elevator could potentially offer limitless and cheap space travel.

At a stroke, it would make everything from tourism to more ambitious expeditions to Mars commercially viable. The idea couldn't come too soon for NASA, which spends an estimated $500 million every time the shuttle blasts off, not to mention burning about 900 tons of polluting rocket fuel.

Check out the article at Fox News.

Can you imagine the view from up there? Whenever they build it, I'm taking a ride up to the space elevator resort! =)

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Friday, December 19, 2008

Space Shuttles For Sale!!!

Space Shuttle Atlantis

Space Shuttle Discovery

Space Shuttle Columbia

Space Shuttle Atlantis riding a Boeing 747 Shuttle Carrier Aircraft (SCA)

Need that perfect gift for the space buff in your life?
Got 129 million cu ft of spare hangar space?
Then has NASA got a deal for you: Once the space shuttle fleet retires,
probably by 2010, the shuttles will be ready for purchase.
But even for the Smithsonian's National Air and Space Museum,
the shuttles come at a hefty price—about $42 million each!

Earlier this week the space agency issued a Request for Information (RFI) to educational institutions, museums, and "other organizations" in an attempt to sell off the remaining space shuttles in 2010. The estimated total for tax, tags and freight is $42 million. According to NASA, the RFI will "gauge the level and scope of interest of U.S. organizations in acquiring … orbiters and other major flight hardware."

The agency hopes to find homes for two of the three orbiters; Discovery is already earmarked for the Smithsonian's National Air and Space Museum. By law, the institution has something akin to a rights-of-first-refusal agreement with NASA that allows it first crack at space memorabilia once the government is done with it.

Discovery's long, active history makes it a logical choice for the Smithsonian. The third of NASA's winged spaceships and the oldest working orbiter, Discovery was deployed for the Hubble Space Telescope on mission STS-31 in April 1990, carried the 77-year-old John Glenn back into space in 1998, and was twice NASA's return-to-flight spacecraft—after the Challenger disaster in 1986 and the Columbia explosion five years ago. While Enterprise, the shuttle built for test flights, anchors the Smithsonian's space collection at the Steven F. Udvar-Hazy Center near Dulles airport in Virginia, the museum has long wanted to replace it with an operational orbiter. "To have any flown orbiter would be wonderful," says Valerie Neal, the Smithsonian's curator of the human spaceflight collection. "The Smithsonian tries to acquire the oldest or first-flown aircraft—so up until 2003, we'd hoped it would be Columbia. Now, of course, Discovery would be a perfect fit."

But that history comes with a hefty price tag—even for the internationally renowned Smithsonian. "We were in a different era then, where we had no eBay and people who were looking to make money off of artifacts," NASA spokesman Michael Curie told CollectSpace, a Web site devoted to space memorabilia. "So it was to everyone's advantage to try to provide them to those who might display them." NASA makes an important distinction: The $42 million isn't to buy an orbiter, but to prepare it for public presentation—nearly $30 million goes to "safeing" the craft (removing the fuel systems and other environmental hazards), approximately $8 million goes to display preparation and the final $6 million or so is spent on transportation and installation. Technically, the agency says, the cost is compensation for shipping and handling.

Industry observers also suggest that the cash-strapped space agency is grabbing every dollar it can find for the over-budget Constellation Program. In August, budget constraints forced NASA to scrap plans to have the shuttle's replacement, Orion, ready by 2013. The orbiters should be available Sept. 30, 2011, according to the RFI, and they should be ferried to their final destinations by May 31, 2012—where they will likely remain for a long time, since the agency is also decommissioning the 747 that is used to haul the spacecraft. "In the past, sometimes we have paid for this sort of 'shipping and handling,'" Neal says, "but this is unprecedented in terms of the cost involved. We're thrilled to have an orbiter designated for us, but we'll have to resolve the cost matter. Luckily, it's not like we have to come up with the money in 90 days."

Check out the article at Popular Mechanics.

Sweet... I want one!!! =)

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Tuesday, December 02, 2008

Celestial Bliss?

Venus Jupiter Moon Smile 2008

The heavens smiled down on Earth Monday in a rare celestial trifecta of Venus, Jupiter, and the moon.

The planets aligned—an event known as a conjunction—Sunday night, and were joined by a thin sliver of moon on Monday.

The rare planetary meeting was visible from all parts of the world, even from light-polluted cities such as Hong Kong and New York.

People in Asia witnessed a smiley face (above, photographed from Manila, Philippines), while skywatchers in the United States saw a frown.

The three brightest objects in the sky were so tightly gathered that one could eclipse them with a thumb, according to NASA's Web site.

The next visible Venus-Jupiter conjunction will be on the evening of March 14, 2012, but the two planets will appear farther apart in the sky.

Check out the article at National Geographic News.

Wish I could've seen the smiley face in the sky, but it was still an awesome viewing despite the frown! =)

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Thursday, November 27, 2008

Happy Thanksgiving 2008

Venus Jupiter Moon Alignment 2008

Nov. 26, 2008 -- It's not just families that are getting together this Thanksgiving week. The three brightest objects in the night sky -- Venus, Jupiter and a crescent moon -- will crowd around each other for an unusual group shot.

Starting Thanksgiving evening, Jupiter and Venus will begin moving closer so that by Sunday and Monday, they will appear 2 degrees apart, which is about a finger width held out at arm's length, said Alan MacRobert, senior editor at Sky and Telescope magazine. Then on Monday night, they will be joined by a crescent moon right next to them, he said.

Look in the southwestern sky around twilight -- no telescope or binoculars needed. The show will even be visible in cities if it's a clear night.

"It'll be a head-turner," MacRobert said. "This certainly is an unusual coincidence for the crescent moon to be right there in the days when they are going to be closest together."

The moon is the brightest, closest and smallest of the three and is 252,000 miles away. Venus, the second brightest, closest and smallest, is 94 million miles away. And big Jupiter is 540 million miles away.

The three celestial objects come together from time to time, but often they are too close to the sun or unite at a time when they aren't so visible. The next time the three will be as close and visible as this week will be Nov. 18, 2052, according to Jack Horkheimer, director of the Miami Space Transit Planetarium.

But if you are willing to settle for two out of three -- Venus and the crescent moon only -- it will happen again on New Year's Eve, MacRobert said.

Check out the article at Discovery News.

Happy Thanksgiving! Enjoy the viewing!

Check out today's Google art:

Google Thanksgiving 2008

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Thursday, October 30, 2008

Nearby Solar System Looks a Lot Like Our Own

Epsilon Eridani art

Epsilon Eridani comparison with our own solar system

A nearby star, visible with the unaided eye, is ringed with two rocky asteroid belts and an outer icy halo, making it a three-ring cosmic circus.

The inner asteroid belt appears to be a virtual twin to the belt in our solar system.

The presence of the separate rings of material around the nearby star, called Epsilon Eridani, suggests unseen planets lurk there, where they confine and shape the rings, say the researchers.

If there were in fact rocky planets within the inner gap between the star and asteroid belt, the worlds would likely reside within the star's habitable zone where temperatures would be such that life could survive.

Located 10.5 light-years from Earth in the constellation Eridanus, the star is the ninth closest to the sun.

Our sun's three nearest known stars are gravitationally bound in a system called Alpha Centauri, which is 4.36 light-years away. (A light-year is the distance light travels in one year, about 6 trillion miles or 10 trillion km.)

Epsilon Eridani is slightly smaller and cooler than the sun. And it's also younger. While the sun is an estimated 4.5 billion years old, Epsilon Eridani has been around for just 850 million years.

"Studying Epsilon Eridani is like having a time machine to look at our solar system when it was young," said researcher Massimo Marengo, an astronomer at the Harvard-Smithsonian Center for Astrophysics in Massachusetts.

Rocky rings

Astronomers had known about the star's outer icy ring, but they were surprised when NASA's Spitzer Space Telescope revealed two rocky rings between the icy halo and the star.

The inner asteroid belt looks identical to ours in terms of material, and it orbits at 3 astronomical units (AU) from Epsilon Eridani — the same distance between the sun and the rocky asteroid belt between Mars and Jupiter. (An astronomical unit equals the average Earth-sun distance of 93 million miles, or about 150 million km.)

Epsilon Eridani's second asteroid belt is 20 AU from the star, or about where Uranus is in relation to our sun, and it is crowded with as much mass as Earth's moon.

The outer icy ring, previously observed, extends about 35 AU to 100 AU from Epsilon Eridani and is similar in composition to our Kuiper Belt, a region of icy objects beyond Neptune. Eridani's outer ring holds about 100 times more material than ours, however.

New exoplanets?

The rings formed when the system was very young, likely when collisions between planets and other smaller bodies resulted in small bits and big chunks of debris that took shape as the asteroid belts and icy ring, the researchers suggest.

And the gaps between these rings were likely shaped by planets whose gravitational forces could remove any excess material flung from the belts, while also keeping the shape of the rings. Planets in our solar system exert similar shaping effects.

"The big planets that are now keeping those gaps are determining the geometry of the system of rings," Marengo told SPACE.com.

He and his colleagues propose that three planets with masses between those of Neptune and Jupiter could be in orbit about Epsilon Eridani.

A Jupiter-mass exoplanet was detected in 2000 by the radial velocity method in which astronomers look for wobbling motion of a star due to the gravitational tug of a planet. That planet is located near the edge of the innermost ring.

A second planet must lurk near the second asteroid belt, and a third at about 35 AU near the inner edge of Epsilon Eridani's Kuiper Belt, the researchers say.

Terrestrial planets could reside inside the innermost asteroid belt as well, though there currently is no clear indication of that, Marengo said.

The research will be detailed in the Jan. 10 issue of The Astrophysical Journal.

Check out the article at Fox News.

Cool! Maybe one day we'll develop the technology to travel there! Who knows, maybe it'll be soon enough that my kids or grandkids could go explore the planets there!

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Tuesday, July 29, 2008

NASA Celebrates 50 Years!

NASA 50th Anniversary

NASA Ares Concept Art

International Space Station - after mission STS-124

Kennedy Space Center - Space Shuttle Endeavor - STS-118

Shuttle Launch - Endeavor STS-118

Buzz Aldrin on the Moon

Earthrise - William Anders - Apollo 8

The Earth

The Solar System

The Space Race

After the Soviet space program's launch of the world's first human-made satellite (Sputnik 1) on 4 October 1957, the attention of the United States turned toward its own fledgling space efforts. The U.S. Congress, alarmed by the perceived threat to U.S. security and technological leadership (known as the "Sputnik crisis"), urged immediate and swift action; President Dwight D. Eisenhower and his advisors counseled more deliberate measures. Several months of debate produced an agreement that a new federal agency was needed to conduct all non-military activity in space.

Explorer 1, officially Satellite 1958 Alpha, was the first Earth artificial satellite of the United States, having been launched at 10:48pm EST on 31 January 1958.

On 29 July 1958, President Dwight D. Eisenhower signed the National Aeronautics and Space Act, establishing the National Aeronautics and Space Administration (NASA). When it began operations on 1 October 1958, NASA consisted mainly of the four laboratories and some 80 employees of the government's 46-year-old research agency, the National Advisory Committee for Aeronautics (NACA). A significant contributor to NASA's entry into the Space race was the technology from the German rocket program, led by Wernher von Braun, who became a naturalized citizen of the United States after World War II. He is today regarded as the father of the United States space program. Elements of the Army Ballistic Missile Agency (of which von Braun's team was a part) and the Naval Research Laboratory were incorporated into NASA.

NASA's earliest programs involved research into human spaceflight and were conducted under the pressure of the competition between the U.S. and the USSR (the Space Race) that existed during the Cold War. Project Mercury, initiated in 1958, started NASA down the path of human space exploration with missions designed to discover simply if man could survive in space.

On May 5, 1961, astronaut Alan Shepard—one of the seven Project Mercury astronauts selected as pilot for this mission—became the first American in space when he piloted Freedom 7 on a 15-minute suborbital flight. John Glenn became the first American to orbit the Earth on 20 February 1962 during the 5 and a quarter-hour flight of Friendship 7.

Once the Mercury project proved that human spaceflight was possible, Project Gemini was launched to conduct experiments and work out issues relating to a moon mission. The first Gemini flight with astronauts on board, Gemini 3, was flown by Gus Grissom and John Young on 23 March 1965. Nine other missions followed, showing that long-duration human space flight was possible, proving that rendezvous and docking with another vehicle in space was possible, and gathering medical data on the effects of weightlessness on human beings.

Apollo program

The Apollo program was designed to land humans on the Moon and bring them safely back to Earth. Apollo 1 ended tragically when all the astronauts inside died due to fire in command module during an experimental simulation. Because of this incident, there were a few unmanned tests before men boarded the spacecraft. Apollo 8 and Apollo 10 tested various components while orbiting the Moon, and returned photography. On July 20, 1969, Apollo 11, landed the first man on the moon, Neil Armstrong. Apollo 13 did not land on the Moon due to a malfunction, but did return photographs. The six missions that landed on the Moon returned a wealth of scientific data and almost 400 kilograms of lunar samples. Experiments included soil mechanics, meteoroids, seismic, heat flow, lunar ranging, magnetic fields, and solar wind experiments.

Skylab

Skylab was the first space station the United States launched into orbit. The 75 tonne station was in Earth orbit from 1973 to 1979, and was visited by crews three times, in 1973 and 1974. Skylab was originally intended to study gravitational anomalies in other solar systems, but the assignment was curtailed due to lack of funding and interest. It included a laboratory for studying the effects of microgravity, and a solar observatory. A Space Shuttle was planned to dock with and elevate Skylab to a higher safe altitude, but Skylab reentered the atmosphere and was destroyed in 1979, before the first shuttle could be launched, landing over parts of Western Australia and the Indian Ocean, with some fragments being recovered.

Apollo-Soyuz

The Apollo-Soyuz Test Project (or ASTP) was the first joint flight of the U.S. and Soviet space programs. The mission took place in July 1975. For the United States of America, it was the last Apollo flight, as well as the last manned space launch until the flight of the first Space Shuttle in April 1981.

Shuttle era

The Space Shuttle became the major focus of NASA in the late 1970s and the 1980s. Planned to be a frequently launchable and mostly reusable vehicle, four space shuttles were built by 1985. The first to launch, Columbia, did so on April 12, 1981.

The shuttle was not all good news for NASA — flights were much more expensive than initially projected, and the public again lost interest as missions appeared to become mundane until the 1986 Challenger disaster again highlighted the risks of space flight. Work began on Space Station Freedom as a focus for the manned space program, but within NASA there was argument that these projects came at the expense of more inspiring unmanned missions such as the Voyager probes.

Nonetheless, the shuttle launched milestone projects like the Hubble Space Telescope (HST). The HST is a joint project between NASA and the European Space Agency (ESA), and its success has paved the way for greater collaboration between the agencies. The HST was created with a relatively small budget of $2 billion but has continued operation since 1990, delighting both scientists and the public. Some of its images, such as the groundbreaking Hubble Deep Field, have become famous.

In 1995 Russian-American interaction resumed with the Shuttle-Mir missions. Once more an American vehicle docked with a Russian craft, this time a full-fledged space station. This cooperation continues to today, with Russia and America the two biggest partners in the largest space station ever built – the International Space Station (ISS). The strength of their cooperation on this project was even more evident when NASA began relying on Russian launch vehicles to service the ISS during the two year grounding of the shuttle fleet following the 2003 Columbia disaster.

Costing over one hundred billion dollars, it has been difficult at times for NASA to justify the ISS. The population at large has historically been hard to impress with details of scientific experiments in space, preferring news of grand projects to exotic locations. Even now, the ISS cannot accommodate as many scientists as planned.

During much of the 1990s, NASA was faced with shrinking annual budgets due to Congressional belt-tightening in Washington, D.C. In response, NASA's ninth administrator, Daniel Goldin, pioneered the "faster, better, cheaper" approach that enabled NASA to cut costs while still delivering a wide variety of aerospace programs (Discovery Program). That method was criticized and re-evaluated following the twin losses of Mars Climate Orbiter and Mars Polar Lander in 1999. Yet, NASA's shuttle program had made 116 successful launches as of December 2006.

The Space Shuttle Columbia disaster in 2003, which killed the crew of six Americans and one Israeli, caused a 29-month hiatus in space shuttle flights and triggered a serious re-examination of NASA's priorities. The U.S. government, various scientists, and the public all reconsidered the future of the space program.

NASA's future

NASA's ongoing investigations include in-depth surveys of Mars and Saturn and studies of the Earth and the Sun. Other NASA spacecraft are presently en route to Mercury and Pluto. With missions to Jupiter in planning stages, NASA's itinerary covers over half the solar system.

Managed by the NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, the Phoenix mission was launched on August 4, 2007. It will search for possible underground water courses in the northern Martian pole. This lander revives much of its experiments and instrumentation from the failed 1999 Mars Polar Lander, hence its name. An improved and larger rover, Mars Science Laboratory, is under construction and slated to launch in 2009. On the horizon of NASA's plans are two possibilities under consideration for the Mars Scout 2013 mission.

The New Horizons mission to Pluto was launched in 2006 and will fly by Pluto in 2015. The probe received a gravity assist from Jupiter in February 2007, examining some of Jupiter's inner moons and testing on-board instruments during the fly-by.

Vision for space exploration

On January 14, 2004, ten days after the landing of the Mars Exploration Rover Spirit, US President George W. Bush announced a new plan for NASA's future, dubbed the Vision for Space Exploration. According to this plan, mankind will return to the Moon by 2018, and set up outposts as a testbed and potential resource for future missions. The Space Shuttle will be retired in 2010 and Orion will replace it by 2014, capable of both docking with the ISS and leaving the Earth's orbit. The future of the ISS is somewhat uncertain — construction will be completed, but beyond that is less clear. Although the plan initially met with skepticism from Congress, in late 2004 Congress agreed to provide start-up funds for the first year's worth of the new space vision.

Hoping to spur innovation from the private sector, NASA established a series of Centennial Challenges, technology prizes for non-government teams, in 2004. The Challenges include tasks that will be useful for implementing the Vision for Space Exploration, such as building more efficient astronaut gloves.

Moon base

On December 4, 2006, NASA announced it was planning to build a permanent moon base. NASA Associate Administrator Scott Horowitz said the goal was to start building the moonbase by 2020, and by 2024, have a fully functional base, that would allow for crew rotations like the International Space Station. Additionally, NASA plans to collaborate and partner with other nations for this project.

Man on Mars

On September 28, 2007, NASA administrator Michael D. Griffin stated that NASA aims to put a man on Mars by 2037, and in 2057, "We should be celebrating 20 years of man on Mars."

Check out the article at Wikipedia.

When you look at how much NASA has brought us in the past 50 years, one cannot even begin to imagine what the next 50 will bring! Exciting stuff!!!

Be sure to check out the image gallery at the NASA 50th Anniversary website!

For more information, check out the following interesting links:

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Tuesday, March 11, 2008

Dextre heads to the ISS!

The Air Force Thunderbirds fly over the Space Shuttle Endeavor

Space Shuttle Endeavor liftoff - March 11, 2008

The International Space Station at the conclusion of NASA Mission STS-122

The Special Purpose Dexterous Manipulator (Dextre) will be installed on NASA Mission STS-123

The Special Purpose Dexterous Manipulator (Dextre) will be installed on NASA Mission STS-123

CAPE CANAVERAL, Fla. — Shuttle Endeavour and a crew of seven blasted into orbit Tuesday on what was to be the longest space station mission ever, a 16-day voyage to build a gangly robot and add a new room that will serve as a closet for a future lab.

The space shuttle roared from its seaside pad at 2:28 a.m., lighting up the sky for miles around as it took off on a multinational flight involving Canada and Japan.

It was a rare treat: The last time NASA launched a shuttle at nighttime was in 2006. Only about a quarter of shuttle flights have begun in darkness.

"Good luck and Godspeed, and we'll see you back here in 16 days," launch director Mike Leinbach radioed to the astronauts right before liftoff.

"Banzai," replied Endeavour's commander, Dominic Gorie, using a Japanese exclamation of joy. "God truly has blessed us with a beautiful night here, Mike, to launch, so let's light them up and give Him a show."

They did. The shuttle took flight with a flash of light, giving a peach-yellow glow to the low clouds just offshore before disappearing into the darkness.

Shortly after liftoff, the astronauts had to deal with alert messages regarding their ship's steering thrusters. Then for unknown reasons, the cooling system had to be switched from the primary to backup line. NASA said it was looking into the problems.

Gorie and his crew face a daunting job once they reach the international space station late Wednesday night. The astronauts will perform five spacewalks, the most ever planned during a shuttle visit.

The launching site was jammed with Canadians and Japanese representing two of the major partners in the international space station.

The Canadian Space Agency supplied Dextre, the two-armed robot that was hitching a ride aboard Endeavour, while the Japanese Space Agency sent up the first part of its massive Kibo lab, a storage compartment for experiments, tools and spare parts.

Also on hand for the liftoff was a 19-member congressional delegation led by Rep. Nick Lampson, D-Texas, whose district includes Johnson Space Center in Houston. He is pushing for increased NASA funding.

For the first time since space station construction began nearly 10 years ago, all five major partners were about to own a piece of the orbiting real estate. The launch of the first section of Kibo, or Hope, finally propelled Japan into the space station action.

"Our Japanese people have been waiting for a very long, long time," said Yoshiyuki Hasegawa, the Japanese Space Agency's station program manager.

"With this flight I believe that we finally became a real partner of the (space station) project, not just one of the members on the list, after 20 some years of effort in the project," said Keiji Tachikawa, head of the Japanese Space Agency.

Work on the space station project began in the mid-1980s, with preliminary design work for Kibo (pronounced KEE'-boh) starting in 1990. Space station construction, however, was stalled over the years for various reasons, most recently the 2003 Columbia tragedy.

The main part of the Kibo lab will fly on the next shuttle mission in May, with the final installment, a porch for outdoor experiments, going up next year.

Altogether, the Japanese Space Agency has invested about $6.7 billion in the space station program, including a Kibo control center near Tokyo.

Canada's $200 million-plus Dextre, meanwhile, is designed to eventually take over some of the more routine outdoor maintenance chores from spacewalking astronauts.

Dextre, short for dexterous and pronounced like Dexter, will join the space station's Canadian-built robot arm, already in orbit for seven years.

In addition to working with their international payloads, Endeavour's astronauts will try out a caulking gun and high-tech goo on deliberately damaged shuttle thermal tile samples.

The test — part of NASA's ongoing post-Columbia safety effort — should have been performed last year, but was put off because of emergency space station repairs.

Astronaut Garrett Reisman will stay behind on the space station until June, swapping places with a Frenchman who accompanied Europe's Columbus lab into orbit in February.

A Japanese astronaut is also part of Endeavour's all-male crew.

Endeavour's countdown was the smoothest in years, officials said. Shortly after liftoff, however, the astronauts had to deal with a couple of problems that ended up being minor. They got alert messages for some of their ship's steering thrusters, but it turned out to be a bad electronics card. Then the primary cooling system failed, and they had to switch to the backup.

A cursory look at the initial launch images — fewer than usual because of the nighttime launch — showed only one significant loss of debris from the external fuel tank 83 seconds into the flight. But it appeared to miss the right wing.

In any event, Endeavour will be checked thoroughly in orbit for any potential damage, standard procedure ever since the loss of Columbia because of a foam strike.

"This is just a wonderful beginning to what's going to be a long and challenging mission for us," said LeRoy Cain, a shuttle manager who gave the final "go" for launch. "But we're really looking forward to it and we're ready to go, ready to get to work on orbit."

It is the second of six planned shuttle missions this year, all but one to the space station. NASA faces a 2010 deadline for finishing the station and retiring its shuttles.

Check out the article at Fox News.

Cool stuff! Man, do I need a Dextre at home!

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Monday, February 25, 2008

The End is Near!

Coronal Mass Ejection

Scientist have nailed down how and when the Earth will cease to exist.

The sun will slowly expand into a red giant, pushing the Earth further out into space, but not far enough.

Our home planet will be snagged by the sun's outer atmosphere, gradually plunging to its doom inside the fiery stellar furnace.

"The drag caused by this low-density gas is enough to cause the Earth to drift inwards, and finally to be captured and vaporized by the sun," explains astronomer Robert Smith of the University of Sussex in southern England.

Previous projections had all figured that the Earth would avoid falling into the sun, even during our star's red-giant phase.

The good news: This won't happen for another 7.6 billion years.

The bad news: Life on Earth will end long before then.

In fact, we've only got a billion years left before the slowly expanding sun boils off the oceans and reduces our planet to an uninhabitable cinder, says Smith.

That may sound like a long time, but in fact life on Earth's been around a lot longer than that — a total of 3.7 billion years, according to the latest estimates.

For those first three billion years, true, we were nothing but pond scum. Still, the new figures indicate the long story of life on our fair blue-green planet may be entering its last act.

Is there any way our future descendants can save themselves? Why, yes, explains Smith.

He cites a recent study emanating from the University of California, Santa Cruz. It proposes taming an asteroid to swing by the Earth every few thousand years, slowly nudging the Earth into higher solar orbit, enough to outpace the sun's own outward growth.

"This sounds like science fiction," says Smith. "But it seems that the energy requirements are just about possible and the technology could be developed over the next few centuries."

Check out the article at Fox News.

Holy crap does that sound like a bad day!

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Friday, February 15, 2008

Target Practice?

U.S. Officials Plan to Shoot Down Satellite

US Navy Aegis Combat System

SM-3 Launch from US Navy Aegis Cruiser

WASHINGTON — Taking a page from Hollywood science fiction, the Pentagon said Thursday it will try to shoot down a dying, bus-size U.S. spy satellite loaded with toxic fuel on a collision course with the Earth.

The military hopes to smash the satellite as soon as next week — just before it enters Earth's atmosphere — with a single missile fired from a Navy cruiser in the northern Pacific Ocean.

One of the main goals of the satellite's destruction is to prevent any sensitive equipment from falling into the wrong hands.

"We are worried about something showing up on e-Bay," defense and intelligence expert John Pike said, adding that breaking up the satellite's pieces lessens the chance that sensitive U.S. technology could wind up in Chinese hands.

"What they have to be worried about is that a souvenir collector is going to find some piece, put it on e-Bay, and the Chinese buy it," said Pike, who is director of the defense research group GlobalSecurity.org.

The dramatic maneuver may well trigger international concerns, and U.S. officials have begun notifying other countries of the plan — stressing that it does not signal the start of a new American anti-satellite weapons program.

Military and administration officials said the satellite is carrying fuel called hydrazine that could injure or even kill people who are near it when it hits the ground.

That reason alone, they said, persuaded President Bush to order the shoot-down.

"That is the only thing that breaks it out, that is worthy of taking extraordinary measures," said Gen. James Cartwright, vice chairman of the Joint Chiefs of Staff, during a Pentagon briefing.

He predicted a fairly high chance — as much as 80 percent — of hitting the satellite, which will be about 150 miles up when the shot is fired.

The window of opportunity for taking the satellite down, Cartwright said, opens in three or four days and lasts for about seven or eight days.

"We'll take one shot and assess," he said. "This is the first time we've used a tactical missile to engage a spacecraft."

Deputy National Security Adviser James Jeffrey discounted comparisons to an anti-satellite test conducted by the Chinese last year that triggered criticism from the U.S. and other countries.

"This is all about trying to reduce the danger to human beings," Jeffrey said. "Specifically, there was enough of a risk for the president to be quite concerned about human life."

There might also be unstated military aims, some outside the administration suggested.

Similar spacecraft re-enter the atmosphere regularly and break up into pieces, said Ivan Oelrich, vice president for strategic security programs at the Federation of American Scientists.

He said, "One could be forgiven for asking if this is just an excuse to test an anti-satellite weapon."

A key issue when China shot down its defunct weather satellite was that it created an enormous amount of space debris.

"All of the debris from this encounter, as carefully designed as it is, will be down at most within weeks, and most of it will be down within the first couple of orbits afterward," said Jeffrey. "There's an enormous difference to spacefaring nations in ... those two things."

He and others dismissed suggestions that this was simply an attempt by the U.S. to flex its muscles, and that officials were overstating the toxic fuel threat.

Left alone, the satellite would be expected to hit Earth during the first week of March. About half of the 5,000-pound spacecraft would be expected to survive its blazing descent through the atmosphere and would scatter debris over several hundred miles.

If the missile shot is successful, officials said, much of the debris would burn up as it fell. They said they could not estimate how much would make it through the atmosphere.

They said the largest piece that would survive re-entry would be the spherical fuel tank, which is about 40 inches wide — assuming it is not hit directly by the missile.

The goal, however, is to hit the fuel tank in order to minimize the amount of fuel that returns to Earth, Cartwright said.

A Navy missile known as Standard Missile 3 would be fired at the spy satellite in an attempt to intercept it just before it re-enters Earth's atmosphere.

It would be "next to impossible" to hit the satellite after that because of atmospheric disturbances, he said.

Known by its military designation US 193, the satellite was launched in December 2006. It lost power and its central computer failed almost immediately afterward, leaving it uncontrollable. It carried a sophisticated and secret imaging sensor.

Software associated with the Standard Missile 3 has been modified to enhance the chances of the missile's sensors recognizing that the satellite is its target. The missile's designed mission is to shoot down ballistic missiles, not satellites.

Other officials said the missile's maximum range, while a classified figure, is not great enough to hit a satellite operating in normal orbits.

"It's a one-time deal," Cartwright said when asked whether the modified Standard Missile 3 should be considered a new U.S. anti-satellite technology.

He said that if an initial shoot-down attempt fails, the military would have about two days to reassess and decide whether to take a second shot.

NASA Administrator Michael Griffin told reporters that analysis shows the hydrazine tank would survive a fall to Earth under normal circumstances, much as one did when the space shuttle Columbia crashed.

"The hydrazine which is in it is frozen solid, as it is now. Not all of it will melt," he said.

If the tank hits the ground it will have been breached because the fuel lines will have broken off and hydrazine will vent out, he said.

Jeffrey said members of Congress were briefed on the plan earlier Thursday and that diplomatic notifications to other countries were being made by the end of the day.

"It should be understood by all, at home and abroad, that this is an exceptional circumstance and should not be perceived as the standard U.S. policy for dealing with errant satellites," said House Armed Services Chairman Ike Skelton.

Check out the article at Fox News.

If you're interested in getting a look at this satellite before we blow it out of the sky, it will be easy to see with the unaided eye. Just go check out the Satellite US 192 page at Heavens-Above.com for more info. I'm kinda hoping I can catch a glimpse of the explosion... provided I don't get a close-up view of any falling debris!

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Thursday, January 17, 2008

Messenger reveals new side of Mercury!

Messenger's image of Mercury as it passes Venus

Messenger's first photo of Mercury - the side we've never seen before!

Mariner 10's image of Mercury - 1973

NASA Messenger - Mission to Mercury

January 16, 2008—The first of many planned images from NASA's MESSENGER spacecraft is showing astronomers a side of Mercury no one's ever seen before.

Mercury is tough to view from Earth, since it's so close to the sun. And when the Mariner 10 probe flew past the innermost planet in 1974 and 1975, only one side of the body was facing sunlight.

That's because Mercury rotates three times during every two orbits, so the same side of the planet is lit up every other time it is nearest to the sun—including during all of Mariner's flybys.

Added up, these factors have meant that although Mercury sits only about 57 million miles (92 million kilometers) away from Earth, for more than 30 years scientists have had almost no details about its other face.

But on Monday MESSENGER, the first mission to Mercury since the 1970s, snapped the first image of the "missing" half of the rocky world.

Among many new sights, the picture features the full Caloris Basin, a huge impact basin more than 620 miles (1,000 kilometers) across that sits on the border between the known and previously unknown regions of the planet.

More unprecedented images of the tiny planet are expected as the MESSENGER craft completes three flybys of Mercury before settling into orbit in March 2011.

From that point on, writes astronomer Phil Plait on the Bad Astronomy blog, "we'll get as many images of this tiny, hot, battered, dense and neglected planet as we can handle."

Check out the article at National Geographic News.

Awesome new photos! I can't wait to see the map of Mercury once Messenger gets settled into orbit!

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Wednesday, December 12, 2007

Manned Asteroid Mission?

NASA Manned Asteroid Mission

NASA Manned Asteroid Mission

NASA Manned Asteroid Mission

Here we are, nearly eight years into the 21st century, and the most spectacular manned mission NASA can pull off is a trip to the International Space Station, a mere 210 miles above the Earth. Even the most ambitious part of NASA's current plans for human spaceflight involves visiting a celestial body we've already been to: the moon. Astronauts, space buffs and an unimpressed public hunger for space exploration that's more dramatic, more heroic, more new. Something like, say, landing astronauts on a distant rock hurtling through space at 15 miles per second.

That's exactly the kind of trip NASA has been studying. In fact, scientists at the space agency recently determined that a manned mission to a near-Earth asteroid would be possible using technology being developed today. The mission wouldn't be easy. A crew of two or three would spend months riding in a cramped spacecraft before reaching their barren, nearly gravity-free target. That such a mission is even being considered, though, says a lot about the versatility of NASA's next fleet of spacecraft and the ambitions the agency has for them. If nothing else, it's a signal that space exploration could soon get much more exciting.

The Allure of an Asteroid

This wouldn't be our first trip to an asteroid. We've been visiting them by proxy for years now, using unmanned space probes. In 2000 NASA's NEAR Shoemaker spacecraft arrived at 433 Eros, which a century earlier became the first near-Earth asteroid known to man; five years later, the Japanese Hayabusa probe touched down on asteroid 25143 Itokawa.

Yet unmanned probes have their limitations. NEAR Shoemaker and Hayabusa gathered a good deal of data, but we still don't know the exact composition and internal structure of the asteroids they visited. And although Hayabusa was designed to collect two small samples from Itokawa, it's doubtful the probe will actually have anything onboard when it returns in 2010.

Humans, however, could be much more effective. Unlike robots, we adapt to our environment in real time. "We spend weeks at a rock with a Mars rover, trying to determine what it is," says Rob Landis, an engineer at NASA's Johnson Space Center and one of the co-leaders of the mission feasibility study. "An astronaut could make that determination in a matter of seconds."

A human crew could travel across an asteroid more intelligently than a robot, making it easier to deploy scientific instruments, collect samples, and zero in on the areas of greatest interest. "No doubt, on a human mission we would characterize an asteroid better than we ever have," says Bruce Betts, director of projects for the Planetary Society.

Plenty of characterization needs to be done. While most asteroids are a safe distance from Earth (in an approximately 190-million-mile-wide expanse between Mars and Jupiter), Jupiter's gravitational tug and, less often, collisions between asteroids can kick these objects into orbits that pass uncomfortably close to Earth. The 270-meter-wide asteroid 99942 Apophis, for example, will pass within roughly 24,000 miles of Earth in 2029, and could come back for a direct hit in 2036.

And if we're to have any hope of deflecting asteroids, we need to know a lot more about them than we do now. First off: What, exactly, are they made of? Measurements taken by Hayabusa indicate that 40 percent of Itokawa's volume is empty space. If some asteroids are truly this porous, that's helpful information for any plan to destroy or deflect an Earth-bound object.

Averting the apocalypse isn't the only reason to study near-Earth asteroids, though. They could be floating gold mines for future deep-space expeditions. Preliminary observations suggest that some asteroids are rich in useful minerals and, better yet, frozen water—the most valuable resource a space traveler could hope to find. If water could be extracted from asteroids, it could not only be used for drinking, but also broken down into oxygen for breathing and hydrogen for rocket fuel. "It might be an ultimate way to get to Mars," Landis says.

Check out the article and the slideshow at Popular Science.

Just image the resources that could be discovered and the knowledge that would be gained by this venture. Truly exciting stuff!

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Wednesday, November 14, 2007

Earth-rise in HD!

HD image of Earth taken from Japan's satellite Kaguya, aka Selene

Selene's HD version of the famous Apollo photo: Earth-rise

Selene's HD image of the Earth setting on the moon

Selene's HD compilation of the Earth setting on the moon

Apollo's Earth-rise
The original Earth-rise - taken by William Anders
during the Apollo 8 mission to the Moon on December 24, 1968.

A Japanese moon probe has replicated the famous Apollo-era "Earth-rise" photograph with modern high-definition imaging.

The Kaguya spacecraft, also called Selene, has been orbiting 62 miles (100 kilometers) above the moon since Oct. 18.

The new Earth-rise image shows our blue world floating in the blackness of space. It is a still shot taken from video made by the craft's high-definition television (HDTV) for space.

A second image, taken from a different location in the lunar orbit, has been dubbed Earth-set. A related series of still images shows our planet setting beyond the lunar horizon.

In the Earth-set image, Earth appears upside-down; visible are Australia and Asia. A region near the moon's south pole is seen in the foreground.

The footage was taken Nov. 7 using equipment provided by the Japan Broadcasting Corporation (NHK).

The orbiter mission is run by the Japan Aerospace Exploration Agency (JAXA). Its first high-definition videos of Earth were sent back last month. The mission objectives are to obtain scientific data on the origin and evolution of the moon and to develop the technology for future lunar exploration.

Check out the article at Space.com.

Awesome images... I want to get my hands on that video! Congrats to JAXA on a successful mission, and thanks for sharing!

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Thursday, October 04, 2007

The Beep Heard Around the World

Sputnik I - The Beep Heard Around the World

Sputnik I Launch

Sputnik I Model

With a series of small beeps from a spiky globe 50 years ago Thursday, the world shrank and humanity's view of Earth and the cosmos expanded.

Sputnik, the first artificial satellite, was launched by the Soviets and circled the globe Oct. 4, 1957. The Space Age was born. And what followed were changes to everyday life that people now take for granted.

What we see on television, how we communicate with each other, and how we pay for what we buy have all changed with the birth of satellites.

Communications satellites helped bring wars and celebrations from thousands of miles away into our living rooms. When we go outside, weather satellites show us whether we need to carry an umbrella or flee a hurricane. And global positioning system satellites even keep us from getting lost on unfamiliar streets.

Sputnik gave birth to more than mere technology. The threat of a Soviet-dominated space spurred the U.S. government to increase tenfold money spent on science, education and research. Satellite pictures of Earth inspired an embryonic environmental movement.

Spy and communications satellites also kept the world at relative peace, experts say. Just last week, scientists used commercial satellite images to document human rights violations in Myanmar.

When Sputnik was launched, the public thought a space future would consist of gigantic space stations and colonies on the moon and other planets. The fear was warfare in space raining down on Earth.

"The reality is that the things we expected did not come to pass, and the things that we did not fathom changed our lives in so many ways that we cannot even envision a life that's different at this point," said Roger Launius, senior curator at the Smithsonian Institution's National Air and Space Museum.

America got a taste of that in May 1998. Just one communications satellite malfunctioned. More than 30 million pagers went silent. Credit card payment approvals didn't work. National Public Radio and CNN's Airport Television Network went off the air in some places.

"The civilization we live in today is as different from the one that we lived in the mid-1950s as the mid-1950s were from the American revolution," said Howard McCurdy, an American University public policy professor. "It's hard to imagine these things happening without space. I guess I could have a computer, but I wouldn't be able to get on the Internet."

All thanks to an 184-pound metal ball with spikes shot into space by a country that doesn't exist anymore.

"The launch of Sputnik actually triggered heightened interest among the American people, not only in space, but in science, mathematics and education," said White House science adviser John Marburger. "It also opened up people's eyes to the possibility that space could actually be used for something."

Check out the article at Fox News.

It's amazing the technology that hostility and competition can breed. Where would we be now if not for the World Wars and the Cold War? I don't think we could even imagine!

Sputnik was not the original plan by the Russians... they used rockets from their ICBM program and threw together the simple little sphere with a radio transmitter in an effort to beat the USA to space. The only thing that they actually accomplished was to show the world that it could be done and that they did it first, and to broadcast the "Beep Heard Around the World."

Check out the:

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Thursday, September 27, 2007

The Sky is Falling!

Earth Impact Event

Peru Meteorite Crater

Barringer Meteor Crater - Arizona

On what started as a normal mid-August Saturday night, residents of a small, remote Peruvian town saw a bright light streak across the sky, heard a resounding bang and suddenly found themselves at the center of a media frenzy.

Initial suspicions of an airplane crash quickly spiraled into widespread reports that a meteorite had plummeted to Earth and left a smoking, boiling crater whose supposedly noxious fumes were reported to have sickened curious locals who went to peer at the hole.

Geologists doubted that the crater was actually caused by a meteorite, and firm explanations were offered that a meteorite would not even emit fumes and that the "sickness" was likely a case of mass hysteria.

Nevertheless, onlookers far and wide were fascinated by the idea that this event could be a real-life "Andromeda Strain," after the 1969 novel by Michael Crichton in which a mysterious rock from outer space carries a lethal microbe that kills nearly everyone infected by it.

So what is it about things falling from the sky that fills us with such fear that we make ourselves sick with panic?

Mass Hysteria

Media reports of the number of locals afflicted by a "mysterious disease" — with symptoms such as nausea, headaches and sore throats — after visiting the crater figured in every news article about the Aug. 15 event, with some reporting that as many as 600 people had fallen ill.

But doctors who visited the site told the Associated Press they found no evidence that the crater had actually sickened such a large number of people.

If noxious fumes did emanate from the crater, they were most likely the result of a hydrothermal explosion that could have actually formed the crater, or were released from the ground if and when the meteorite struck, according to many geologists.

Arsenic is found in the subsoil in that area of Peru and often contaminates the drinking water there, according to Peruvian geologists quoted on Sept. 21 by National Geographic News.

Arsenic fumes released from the crater could have sickened locals who went to look, said one geologist who examined the site.

Some health officials suggest instead that the symptoms described by the locals, the large number of people reporting those symptoms and the apparently rapid spread have all the hallmarks of a case of mass hysteria.

"The Peruvian event seems to be a rare case where we may be witnessing collective anxiety that is approaching near hysteria," said Benny Peiser, a social anthropologist at Liverpool John Moores University in England. "The major[ity] of the affected Peruvian town hinted that some of the mass anxiety is due to fear of imminent impacts and psychological stress, which is not surprising given the premature speculation and media hype."

Fear of Outer Space

Fear of a meteorite impact is nothing new — humans have long looked to the heavens with a wary eye.

"The fear of cosmic disaster, in particular cometary impacts, has existed in all cultures for millennia," Peiser told SPACE.com

But the space age revealed just how many dangers, including comets, meteors, asteroids and cosmic rays, await us in the final frontier.

"Only since the late 20th century, humankind has become aware of the risk posed by asteroids and comets," Peiser said. "Unfortunately, this risk has been wildly exaggerated by popular culture."

Our curiosity and fear of impact events has increased their coverage by the world media, Peiser says, which in turn has increased the number of meteorite impact reports, even when the evidence doesn't point that way.

While this fear is normal and understandable, it's been blown out of proportion so that the public thinks that impact risks are higher than they are, Peiser argues.

"Most people are simply not aware that we are making enormous progress in finding and identifying the population of Near Earth Objects and that the impact risk is thus diminishing year by year," Peiser said.

When meteorites have struck, they have never carried any hint of some mysterious space disease.

So much for the Andromeda Strain.

Check out the article at Fox News.

LOL! The Peruvian Chicken Little: "The sky is falling, the sky is falling... I think I'm coming down with something!"

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Wednesday, September 19, 2007

Lunar Ark - A Sanctuary for Civilization

The Sanctuary for Civilization

The Moon - Destination of the Lunar Ark

Lunar Ark - The Sanctuary for Civilization

The moon should be developed as a sanctuary for civilization in case of a cataclysmic cosmic impact, according to an international team of experts.

NASA already has blueprints to create a permanent lunar outpost by the 2020s.

But that plan should be expanded to include a way to preserve humanity's learning, culture, and technology if Earth is hit by a doomsday asteroid or comet, said Jim Burke of International Space University (ISU) in France.

An impact of the size that wiped out the dinosaurs hasn't happened since long before the rise of humans, he pointed out.

Yet scientists' expanding knowledge of asteroids and craters left throughout the solar system has created a consensus that Earth remains vulnerable to a civilization-crushing collision.

This calls for the creation of a space age Noah's ark, Burke said.

Lunar Ark

Humans are just beginning to send trinkets of technology and culture into space. NASA's recently launched Phoenix Mars Lander, for example, carries a mini-disc inscribed with stories, art, and music about Mars.

The Phoenix lander is a "precursor mission" in a decades-long project to transplant the essentials of humanity onto the moon and eventually Mars.

The International Space University team is now on a more ambitious mission: to start building a "lunar biological and historical archive," initially through robotic landings on the moon.

Laying the foundation for "rebuilding the terrestrial Internet, plus an Earth-moon extension of it, should be a priority," Burke said.

The founders of the group Alliance to Rescue Civilization (ARC) agreed that extending the Internet from the Earth to the moon could help avert a technological dark age following "nuclear war, acts of terrorism, plague, or asteroid collisions."

But the group also advocates creating a moon-based repository of Earth's life, complete with human-staffed facilities to "preserve backups of scientific and cultural achievements and of the species important to our civilization," said ARC's Robert Shapiro, a biochemist at New York University.

"In the event of a global catastrophe, the ARC facilities will be prepared to reintroduce lost technology, art, history, crops, livestock, and, if necessary, even human beings to the Earth," Shapiro said.

"The establishment of an ARC sanctuary would for the first time provide a compelling purpose for the colonization of space."

If the international lunar outpost of the 2020s expands into a colony and then a city, "it is possible that a whole new phase in civilization may develop—the branching of history into one stream on Earth and another on the moon," ISU's Burke added.

This "dual-world expansion" could be within reach by the end of this century, he said.

"Look at the last century, when we went from the Wright brothers to the Apollo missions—along with man's great expansion of his understanding of the cosmos."

Check out the article at National Geographic News.

What an exciting venture! I think that it's an excellent contingency plan for the preservation of our civilization... and yet another justification for the space program!

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Thursday, September 06, 2007

Spaceport America

Spaceport America - Flight at Dawn

Spaceport America - Inside the Terminal

Spaceport America - Cutaway View

GOLDEN, Colorado -- Architectural and engineering teams have begun shaping the look and feel of New Mexico's Spaceport America, taking the wraps off new images today that showcase the curb appeal of the sprawling main terminal and hangar at the futuristic facility.

Last month, a team of U.S. and British architects and designers had been recommended for award to design the primary terminal and hangar facility at Spaceport America - structures that symbolize the world's first purpose-built commercial spaceport.

When the 100,000 square-foot (9,290 square-meter) facility is completed -- the centerpiece of the world's first, purpose-built, commercial spaceport -- the structures will serve as the primary operating base for Sir Richard Branson's Virgin Galactic suborbital spaceliner, and also as the headquarters for the New Mexico Spaceport Authority.

The terminal and hangar facility will also provide room for aircraft and spacecraft, and Virgin Galactic's operations facilities, including pre-flight and post-flight facilities, administrative offices, and lounges. The spacious maintenance hangar can hold two White Knight Two carrier aircraft and five SpaceShipTwo spaceliners - vessels now under construction at Scaled Composites in Mojave, California.

Destination experience

The terminal and hangar facility are projected to cost about $31 million, and will provide a "Destination Experience" for visitors to Spaceport America. Virgin Galactic intends to sign a 20-year lease for approximately 84,000 square feet (7,803 square meters) in the building.

"The URS/Foster team presented us with a concept that blends sensitivity to the environment, cutting-edge technology and a stunning image and shape when viewed from high above," noted Kelly O'Donnell, chair of the New Mexico Spaceport Authority in a press statement last month.

The design chosen is a low-lying, striking bit of construction that uses natural earth as a berm, and relies on passive energy for heating and cooling, with photovoltaic panels for electricity and water recycling capabilities. A rolling concrete shell acts as a roof with massive windows opening to a view of the runway and spacecraft.

According to a press statement, the low-lying, organic shape resembles a rise in the landscape, and will use local materials and regional construction techniques.

"A careful balance between accessibility and privacy is achieved, as visitors and astronauts enter the building through a deep channel cut in the landscape," the statement noted. "The walls will form an exhibition area leading to a galleried level above the hangar that houses the spacecraft and on through to the terminal building. Natural light enters via skylights, with a glazed façade reserved for the terminal building, establishing a platform for spectacular views onto the runway."

Construction on the 100,000 square-foot hangar and terminal facility is scheduled to begin in 2008.

Check out the article at Space.com.

WOW... I can't wait to check this place out when it's finished! I think I'll take a wait-and-see attitude when it comes to space tourism. I'd like to have a destination other than "fly into space, enjoy the view and float around for a few minutes, fly home." Maybe these guys need to build a space station resort as the destination, then I'll go.

Be sure to check out the official Spaceport American website!

Also check out the Future of Flight feature at Space.com... interesting stuff!

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Tuesday, August 14, 2007

Phoenix Mars Lander

Phoenix Mars Lander Launch - August 4, 2007

Phoenix Mars Lander - 2007

Phoenix Mars Lander in the Lab

Mars

The North Polar Ice Cap of Mars

Mars Map Showing Locations of Mars Landers

Phoenix Mars Lander Seal

CAPE CANAVERAL, Fla. — A robotic dirt and ice digger blasted off Saturday, August 4th, 2007 on a 422 million-mile journey to Mars that NASA hopes will culminate next spring in the first ever landing within the red planet's Arctic Circle.

The unmanned Delta rocket carrying the Phoenix Mars Lander rose from its seaside pad at 5:26 a.m., exactly on time, and hurtled through the clear moonlit sky. It was easily visible for nearly five minutes, a bright orange speck in a spray of stars.

If all goes as planned — a big if considering only five of the world's 15 attempts to land on Mars have succeeded — the spacecraft will set down on the Martian Arctic plains on May 25, 2008, and spend three months scooping up soil and ice, and analyzing the samples in minuscule ovens and mixing bowls.

The Phoenix Mars Lander won't be looking for evidence of life on Mars but rather traces of organic compounds in the baked and moistened samples, which would be a possible indicator of conditions favorable for life, either now or once upon a time.

If organic compounds are present on Mars, they're more likely to have been preserved in ice. That's why NASA is aiming for the planet's high northern latitudes, where ice is almost certainly lurking just beneath the surface.

Only about six inches of soft red soil should cover the ice, and so the digger shouldn't have to probe too deeply. The ice is expected to be as hard as concrete, and a drill on the scoop will help gather enough frozen samples. Some dirt and ice samples will be baked and their vapors analyzed. Other soil samples will be mixed with onboard water and the muddy soup examined by onboard microscopes.

"We're really going there just to understand whether the conditions might have been hospitable for microbial life at some point," said the University of Arizona's William Boynton, lead scientist for the oven experiment.

Even if organic molecules pop up, they could be from incoming meteorites, Boynton noted. "It is important, I think, to keep in mind that we are just looking for organic molecules to see if the conditions are right that they could survive," he said, "and that we aren't really going to be making any inference about whether these molecules are indicative of life."

Mars landings are especially risky. Only five of the 15 U.S., Russian and European attempts have worked, all of them American successes beginning with the 1976 Viking touchdowns. Given those odds, the Phoenix team said it did everything possible to test for failures and will continue to do so as the spacecraft flies to Mars. The entire mission costs $420 million.

NASA has never attempted to land a spacecraft on Mars at such a high northern latitude. A lander intended for the red planet's South Pole went silent immediately upon arrival in 1999. That failure, combined with the loss of the companion Mars orbiter, prompted NASA to cancel a 2001 lander mission. The parts from that scrapped mission were used for Phoenix, thus its name, which alludes to the mythological bird that rises from its own ashes.

Phoenix should help pave the way for human visitors, especially if it confirms the presence of water ice in large amounts near the pole, said Michael Meyer, NASA's lead Mars scientist. That would be a tremendous resource, he noted. But if organic matter is indeed found, it could pose a dichotomy: "As Mars gets more interesting, you may not want to send humans right away until you learn out a little bit more about the red planet and find out whether or not life ever got started there."

Science fiction writer Kim Stanley Robinson, whose novel "Green Mars" is one of dozens of writings going up on a disk aboard Phoenix, is thrilled to see another robot headed to Mars.

The photos beamed back by recent Mars spacecraft "are just astonishingly precise compared to what I got to deal with when I was working on my books," he said. "It's like putting on glasses after you've been semi-blind all your life."

"I'm quite confident that humans will go to Mars and I do think it's important," Robinson said Friday. "When people get there, they'll be able to do on the ground what maybe 100 robotic missions would have been able to do."

Check out the article at Fox News.

This is so interesting! What's more, it brings us one step closer to understanding Mars and sending manned missions there in the future!

Be sure to check out the Mars Exploration Timeline at the official Phoenix Mars Lander website.

Check out my previous Mars posts: Martian Terraforming and Water on Mars!

If you have never checked out Kim Stanley Robinson's Mars Trilogy, you don't know what you're missing!!!

Kim Stanley Robinson's Mars Trilogy

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Thursday, August 09, 2007

Endeavor Takes First Teacher into Space!

Space Shuttle Endeavor - STS-118 Launch

Space Shuttle Endeavor on the pad - STS-118

Space Shuttle Challenger Disaster - January 28, 1986

CAPE CANAVERAL, Fla. — Space shuttle Endeavour roared into orbit Wednesday carrying teacher-astronaut Barbara Morgan, who was finally fulfilling the dream of Christa McAuliffe and the rest of the fallen Challenger crew.

Endeavour and its crew of seven rose from the seaside pad at 6:36 p.m. (2236 GMT), right on time, and pierced a solidly blue sky. They were expected to reach the international space station on Friday.

Once Endeavour was safely past the 73-second mark of the flight, the moment when Challenger exploded shortly after the call "Go at throttle up," Mission Control exclaimed, "Morgan racing toward space on the wings of a legacy."

Immediately after the shuttle reached orbit, Mission Control announced, "For Barbara Morgan and her crewmates, class is in session."

Morgan was McAuliffe's backup for Challenger's doomed launch in 1986 and, even after two space shuttle disasters, never swayed in her dedication to NASA and the agency's on-and-off quest to send a schoolteacher into space. She rocketed away in the center seat of the cabin's lower compartment, the same seat that had been occupied by McAuliffe.

McAuliffe's mother, Grace Corrigan, watched the launch on TV from her home in Massachusetts. "I'm very happy that it went up safely," she said. "We all send her our love," she added, her voice breaking.

More than half of NASA's 114 Teacher-in-Space nominees in 1985 gathered at the launch site, along with hundreds of other educators, all of them thrilled to see Morgan continue what McAuliffe began.

Also on hand was the widow of Challenger's commander, who said earlier in the day that she would be praying and pacing at liftoff and would not relax until Morgan was safely back on Earth in two weeks.

"The Challenger crew — my husband, Dick Scobee, the teacher Christa McAuliffe — they would be so happy with Barbara Morgan," said June Scobee Rodgers. "It's important that the lessons will be taught because there's a nation of people waiting, still, who remember where they were when we lost the Challenger and they remember a teacher was aboard."

NASA Administrator Michael Griffin met Tuesday night with several members of the Challenger astronaut families in town for the launch — although not the McAuliffe family — and said they did not seem worried.

"They didn't act like they came to see another tragedy," he said. "They're here to celebrate her having a chance to fly."

Check out the article at Fox News.

Congratulations Barbara Morgan and the Space Shuttle Endeavor STS-118 Crew! I'm sure that Christa McAuliffe would be happy that her mission is finally underway.

I remember witnessing the Challenger Disaster on the television in my 3rd Grade classroom. What a terrible day that was... I will never forget it. Words cannot express how happy I am to see this mission proceed!

Be sure to check out the STS-118 Mission feature at NASA.gov.

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Tuesday, June 05, 2007

New Planet Bonanza!

Planet Gliese 581a

HD 69830 Planets

Twenty-eight new planets have been discovered outside the solar system in the past year, scientists announced yesterday.

The new discoveries raise the total number of exoplanets—worlds that circle other stars—to 236.

Many of the discoveries were published in scientific journals over the past year.

Monday's announcement at a meeting of the American Astronomical Society in Honolulu, Hawaii, was the first time the finds were presented together to the public.

Most of the new planets are probably huge balls of gas, more like Jupiter than Earth.

But scientists say the increasing rate at which they're finding new exoplanets makes it almost certain that the galaxy is swarming with smaller, rocky, and potentially habitable worlds that have so far eluded detection.

"We're finally now getting a sense that our solar system is not a rarity," said Geoff Marcy, who led the California and Carnegie Planet Search team that made many of the discoveries.

"There are indeed tens of billions of planetary systems out there, no doubt some of them rocky Earths, lukewarm, and suitable for life."

Marcy, an astrophysicist at the University of California, Berkeley, spoke to National Geographic News from the Keck Observatory atop Hawaii's Mauna Kea, where many of the new exoplanets were first spotted.

Advanced Wobbles

Because exoplanets are too far away to be seen directly, the 28 new planets were discovered by looking for the so-called Doppler wobble among stars.

This technique is based on the idea that if an unseen planet orbits a star, its gravitational pull causes a slight "wobble" in the light wavelengths coming from that star.

In addition to revealing the 28 new planets, advances in this technique recently allowed a postdoctoral astronomer at the University of Geneva in Switzerland to pin down the size of a large exoplanet that was discovered almost two years ago by Marcy's team.

Finding Other "Earths"

Based on data gathered so far, of the more than 200 billion stars in the Milky Way galaxy, at least 10 percent are thought to have planetary systems, UC Berkeley's Marcy said.

And at least 30 percent of all stars that are known to host planets have more than one, scientists say.

"Many of them remind us of our home solar system," Marcy said.

"We're finding a lot of cases in which the larger planets—the Jupiters and the Saturns—orbit further from the star than the smaller planets, and that is in fact the case for our solar system," he said.

Among this year's exoplanet finds are at least four new multiple-planet star systems.

Astronomers are finding that stars harboring the most planets are those that are rich in heavier elements, such as silicon, oxygen, iron, and nickel.

This may give researchers a clue as to where to look for possible habitable worlds.

"It's those richer stars that we're focusing our attention on, because those heavy elements are the building blocks of rocky planets like our Earth," Marcy said.

After all, he said, "it's not just the planets that require the heavy elements, it's the organisms themselves, should any exist."

Check out the article at National Geographic News.

There are bound to be TONS of potential new homes for us... we just have to know where to look.

Be sure to check out my previous post on the topic: A New Home?

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Friday, April 27, 2007

A New Home?

Earth-like Planet Gliese 581c

The first known planet beyond the solar system that could harbor life as we know it has been discovered, scientists report.

The most Earthlike planet yet found, it orbits a red dwarf star and likely contains liquid water, said the European astronomers who made the discovery.

The planet is estimated to be only 50 percent larger than Earth, making it the smallest planet yet found outside the solar system, according to a team led by Stephane Udry of the Geneva Observatory in Switzerland.

Known as Gliese 581 c, the newfound world is located in the constellation Libra, some 20.5 light-years away.

The planet is named after the red dwarf star it orbits, Gliese 581, which is among the hundred closest stars to Earth.

Because the planet is 14 times nearer to its star than Earth is to the sun, a year there lasts just 13 days. Gravity on the planet's surface, though, may be twice as strong as Earth's gravity.

Despite the close proximity to its parent star, however, Gliese 581 c lies within the relatively cool habitable zone of its solar system. That's because red dwarfs are relatively small and dim, and are cooler than our sun, the team explained.

The scientists estimated the planet's surface temperature at between 32 and 104 degrees Fahrenheit (0 and 40 degrees Celsius).

"This means water can exist in liquid form," Udry said. "If you want life like our own, then you need water."

Rock or Oceans

The new world could feature familiar, rocky terrains or be completely covered with oceans, the researchers said.

In either case, Gliese 581 c will likely become a target for missions in search of extraterrestrial life, they added.

"We still have a long way to go before reaching that point. But for sure it's the best candidate we know of right now," Udry commented.

"The planet is really close to us," he said. Still, it would take 20 years to get there if traveling at the speed of light, and another 20 to return.

Check out the article at National Geographic News.

Interesting discovery! It would be nice if we had the technology to go check it out. I'm sure that we will in the future, hopefully in my lifetime!

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Wednesday, April 25, 2007

The Sun in 3D!

The first Stereo image of the sun - 2D

The first Stereo image of the sun - 3D
View image with 3D Glasses

NASA's Stereo Satellites

How the Stereo satellites work

April 23, 2007 — Break out those 3-D glasses and get ready to see the sun in a whole new light.

NASA released the first three-dimensional images of the sun ever compiled, a feat made possible by the agency's twin Solar Terrestrial Relations Observatory (STEREO) spacecraft.

Like a person's two eyes providing depth perception, the two spacecraft orbit the sun at a set distance from each other to offer a stereo view.

"The improvement with STEREO's 3-D view is like going from a regular x-ray to a 3-D CAT scan in the medical field," Michael Kaiser, STEREO project scientist at NASA's Goddard Space Flight Center, said in a press release.

Until now, 2-D images of our star (such as the one at top) have allowed scientists to see the sun's weather, but the flat views made it difficult to decipher the exact motion of solar eruptions and the distance they spanned.

Understanding the sun's physics is critical, scientists say, because especially strong events called coronal mass ejections create radiation storms that can disrupt satellites and radio communications and can even knock out power grids on Earth.

The new 3-D images (such as the one at bottom) will help researchers better track these ejections—like meteorologists tracking hurricanes—and thus predict when and where violent storms are headed.

"Previous imagery did not show the front of a solar disturbance as it traveled toward Earth, so we had to make estimates of when the storm would arrive," STEREO investigator Russell Howard of the Naval Research Laboratory told Space.com.

"These estimates were uncertain by a day or so. With STEREO, we can track the front from the sun all the way to Earth and forecast its arrival within a couple hours."

Check out the article at National Geographic News.

I broke out an old pair of 3D glasses and checked out the images... AWESOME! These satellites have delivered more than I expected they would when they were launched last year!

I'd be very interested to see images of Earth if they would develop Earth Stereo satellites!

Be sure to check out all of the Stereo images at the NASA website.

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Wednesday, April 04, 2007

Twin Sunset

Twin Sunset on Tatooine - from Star Wars IV

Telescopic Image of a Binary Star System

Hypothetical view from a moon of planet HD 188753 Ab

The latest data from NASA's Spitzer Space Telescope suggests that the universe might be brimming with planets that have two suns like the desert world that Luke Skywalker called home.

More than half of all known star systems are binaries, with twin stars locked in a gravitational dance, NASA scientists say.

The new data show that dusty disks of debris that could be indicators of planet formation are just as abundant around binaries as they are around single stars.

"There could be countless planets out there with two or more suns," lead study author David Trilling of the University of Arizona, Tucson, said in a press release.

Twin Suns

Existing techniques for looking directly for planets don't work very well when searching around binary stars.

Normally, planet hunters look for the so-called Doppler wobble as evidence of a planet's gravity tugging on its host star.

"But everything in a binary system is more complicated," Trilling told National Geographic News.

That's because, in addition to any planets in orbit, both stars are tugging on each other, he said. Each star's effect on the other would be great enough to mask the planet's effect.

So Trilling's team used Spitzer's infrared cameras to scan for planetary disks instead.

"Spitzer is very good at detecting emitted thermal radiation from dust," Trilling said. "When we're searching for the dust disks, we're looking at a wavelength at which the stars are faint but the dust is bright."

Of the 69 binary systems the team studied, 40 percent were shown to have these dusty disks, meaning they could very well have planets in orbit.

Tatooine Plausible

Astronomers had previously found that planetary disks exist in binary systems where the twin stars are very far apart from each other—about a hundred times farther apart than the distance between Earth and the sun.

Nearly 200 planets outside our solar system have been discovered so far with the wobble technique. About a quarter orbit one star in a binary system.

The latest project focused on binary stars that are much closer together—less than 500 times the distance between Earth and the sun.

What really astonished astronomers was that 60 percent of the tightly circling twin stars they saw had dusty disks—a setup that could create a scene like the Tatooine sunset in Star Wars.

Check out the article at National Geographic.

That would be quite a sight! Imagine how bad global warming would be with 2 suns!

It's amazing how binary star systems work! For more information, check out the Binary Star article at Wikipedia.

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Wednesday, March 21, 2007

Space-Plane Travel

NASA - Virgin Galactic X43b hypersonic space plane

X43 Mission Profile

X43 - Mach 7 Computational Fluid Dynamic

Virgin Galactic, the space tourism venture of billionaire entrepreneur Sir Richard Branson, is the first step toward hypersonic travel between Earth-based cities, according to a company executive.

Hypersonic speeds are greater than five times the speed of sound. An aircraft flying that fast could theoretically reach London from New York in less than an hour.

Virgin Galactic's space flights will accustom passengers to flying at the extreme altitudes likely necessary for hypersonic travel, said Alex Tai, the venture's chief operating officer.

"The experiential rides that we're providing with Virgin Galactic are the first rung, or the stepping stone, for us to use space for other activities," Tai said.

"And the first one of those we'd like to look at is point-to-point travel on the planet," he continued.

The venture will explore the possibility of hypersonic travel as part of a memorandum of understanding it signed last month with the U.S. space agency NASA.

"If Virgin's going to go off and build a high-speed transoceanic passenger service craft of some sort, NASA's of course very interested," said Dan Coughlin, NASA's lead for the Virgin Galactic agreement at the Ames Research Center in Moffett Field, California.

Unique Skills

In 2004 NASA twice flew a demonstration vehicle successfully at hypersonic speeds. Since the demonstration flights, NASA researchers have continued to hone their engineering tools, but budget cuts and other priorities have put plans to build a hypersonic space plane on the back burner.

Nevertheless, "NASA has unique capability and unique engineering skills and facilities that we've developed over 40 or 50 years that could benefit Virgin," Coughlin said.

According to Tai, Virgin Galactic sees that benefit. The collaboration with NASA will allow the venture to tap the agency's engineering prowess to assess the feasibility of a hypersonic passenger service.

"We can't do it ourselves, so we've gone to the experts in the world, which are NASA," Tai said.

Virgin Galactic plans to take customers into space aboard SpaceShipTwo beginning in 2009. The round-trip flights will take off from Mojave. Tickets cost U.S. $200,000.

The two-and-a-half-hour trip, according to Tai, will accustom civilians to space travel much in the same way pilots returning from World War I accustomed civilians to air travel.

World War I pilots went from town to town taking people up for joy rides in their planes as a way to kick-start the airline industry, he said.

Virgin Galactic's spaceflights will also give passengers "an appreciation for the fragility of the Earth and a fantastic view," Tai noted.

"But the long-term goal—going from A to B—is probably where the larger market is," he added.

Check out the article at National Geographic.

I can't wait to book a seat on that flight! Just imagine the photo opportunities!

For more information on this awesome technology, check out A Closer Look at the X-43 Mission and X-43a Raises the Bar to Mach 9.6.

Of course, there are always military implications when dealing with technology such as this, check out my blog entry: Hypersonic Cruise Missile.

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Friday, March 16, 2007

Water on Mars!

Map of Mars

South Pole of Mars covered in Water Ice

Radar Survey of Mars's South Pole

Mars's southern polar ice cap contains enough water to cover the entire planet approximately 36 feet (11 meters) deep if melted, according to a new radar study.

It's the most precise calculation yet for the thickness of the red planet's ice, according to the international team of researchers responsible for the discovery.

Using an ice-penetrating radar to map the south pole's underlying terrain, the scientists calculated that the ice is up to 2.2 miles (3,500 meters) thick in places, said the study's leader, Jeffrey Plaut of NASA's Jet Propulsion Laboratory in Pasadena, California.

The radar, from the Mars Express orbiter, also revealed the surprising purity of the ice, Plaut added.

On average, the ice cap contained less than 10 percent dust, he said. The study will appear in the March 16, 2007 issue of the journal Science.

A Solid Find

The polar ice cap may also contain some frozen carbon dioxide, or dry ice, Plaut said. But there can't be much of it, because such a thick layer of dry ice would start to ooze sideways under its own weight.

"Only water ice could support itself that way," Plaut said.

Check out the article at National Geographic.

Amazing discovery! All of that water is sure to benefit future manned missions to Mars.

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Wednesday, January 31, 2007

Martian Terraforming

Projected Mars Terraforming Stages

Projected Mars Terraforming Stages


The three covers of the Mars Trilogy: Red Mars, Green Mars, Blue Mars

The Sunset on Mars

The Ragged Landscape of Mars

Martian Research Station

Martian Tent City

The interests of the Mars Society—an organization with the overarching goal of colonizing Mars—tend to elicit snickers from non-space fans. Why talk about building homes on Mars when we have problems on Earth like war, bird flu, AIDS and global warming? To the Mars enthusiast, these scourges simply count among the reasons to ditch this rock and head for the Red Planet.

Robert Zubrin, the founder of the Mars Society, likes to point out that Columbus encountered similar resistance from noobs when he pointed across the Atlantic. But Zubrin isn’t a seafarer—he's a scientist, with calculations that say people could create an oxygen atmosphere on Mars in just over 1,000 years. Compare that with other scientists’ predictions of 20,000 or 100,000 years, and he might seem like he's peddling interplanetary snake oil, but there’s no denying that his scheme for “terraforming” is thoroughly conceived.

Click here for an illustrated guide to Zubrin’s six-step plan for inhabiting Mars.

Check out the article at Popular Science.

I like Zubrin's ideas and I'm all for the future efforts to colonize and terraform Mars. In fact, I'd love to visit the red planet one day... I don't know about living there, but at least an extended vacation.

Well, we're definitely headed in the right direction. With NASA's recent announcement of a Permanent Moon Base, we'll have a great place to stage Mars missions from! Hopefully Mars Bases and terraforming will progress quickly from there.

The very idea of terraforming is fascinating! Check out the Terraforming Wiki Page for an interesting read, cool pics and other links.

If this is a subject that interests you, I highly recommend Kim Stanley Robinson's Mars Trilogy - consisting of Red Mars, Green Mars, and Blue Mars. In this awesome work of science fiction, Robinson delves into the technological, social and political aspects in a realistic future of Martian colonization and terraforming. You'll find no light-sabres or warp drives in these books... just down-to-earth, well-written sci-fi!!!

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Friday, January 12, 2007

Space Slingshot?

Forget rockets!
All you need to launch a satellite is
a sled and a giant magnetic slingshot

Concept Art of the Magnetic Space Slingshot

Magnetic Space Slingshot Schematic

Astronauts are trained to withstand as much as nine times the force of gravity. (Three Gs, by comparison, could make the average guy pass out.) But even the toughest among them fall out of the running when it comes to a launch concept from a small civilian company in Goleta, California. To survive the ride on Launchpoint Technologies’s invention, the payload has to be able to survive a brain-splattering 10,000 Gs.

The design calls for a high-speed accelerator that whips a projectile as heavy as 220 pounds around a circular 1.5-mile-radius vacuum tunnel. Powerful electromagnetic motors inside the tunnel will accelerate the unit, strapped to a magnetic sled, in circles until it reaches a velocity of six miles per second and then will eject the projectile from a launch ramp into space.

The system is still just an idea on paper, but the U.S. Air Force has awarded Launchpoint a two-year, $500,000 grant to prove it can work. Project leader Jim Fiske, an expert in magnetic levitation, believes that the magnetic forces would counteract the pulverizing G-forces generated by radial acceleration and prevent the sled from touching the tunnel wall.

As for the system’s cost, its low power requirements would allow spy micro-satellites to be slung into orbit for $50,000, a small fraction of the current $5-million launch cost. That explains the Air Force’s interest, but the system could also be a boon for space exploration. An inexpensive magnet-propelled pipeline could toss construction materials, food and other basic resources into orbit to supply tomorrow’s space colonies. “You could send a block of aluminum, water or even frozen mashed potatoes,” Fiske suggests—anything durable enough to handle the stress.

Fiske says a demonstration device could be ready in four years and will probably be located on a dry lake bed at the Department of Energy’s Nevada Test Site. But future launch rings, he adds, could sit near mountain ranges or even float on the ocean.

How it Works

The Sled: The projectile is encased in a protective polycarbonate sabot and attached to a magnetic sled with a Kevlar sheet. When the sled reaches launch speed, a laser slices through the sheet, freeing the projectile to enter the launch ramp.

The Launch: The projectile contains a small rocket engine and avionics that enable it to steer itself into orbit once it escapes Earth’s atmosphere.

The Track: Magnetic motors above and below the vacuum tube create a magnetic field that accelerates the sled to six miles per second.

Check out the article at Popular Science.

What an interesting design concept! If this can be perfected, imagine the amusement park rides of the future!

Not to mention, the amount of money NASA and the Air Force could save and apply to the Moon outpost and Mars missions. I hope they can make it work!

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Friday, December 29, 2006

Crater Rim Moonbase?

Craters at the Moon's South Pole

The Orion Moon Lander Module

Potential Initial Moon Base Design

NASA is on a flight path to replant astronauts on the Moon, looking to sustain a human presence on that cratered, airless orb on a "go-as-the-nation-can-afford-to-pay" basis. That approach is seen as letting people step back onto the lunar surface no later than 2020.

Space engineers have honed in on one possible site for a lunar outpost: the Moon's south pole.

It's a tactical setting on the rim of Shackleton Crater, a feature some 12 miles (19 kilometers) in diameter.

There's real estate here that basks in near-perpetual sunlight. Also, it's a region that is a doorway into the depths of always dark, Sun-deprived, territory.

What's possibly lurking there in that super-cold darkness is water ice — portrayed by some researchers as the gold standard for future exploration on and from the Moon. Yet there is considerable debate about this resource. If there, such a raw storehouse might be processed into usable oxygen and hydrogen.

Ample evidence

According to NASA Moon outpost thinkers, there are five key reasons for building up an encampment near a lunar pole:

Polar sites have plenty of sunlight, which lessens concerns about energy storage. It would be possible to operate a polar outpost on solar power. While not highlighting it as such, NASA's go-solar tactic also doubles as a non-nuclear, perhaps more politically correct approach.

The environment at the poles of the Moon is relatively benign, making it easier to design a habitat. Temperatures at the poles vary no more than about 50 degrees Celsius all year round, while temperatures at the equator can vary 250 degrees Celsius from day to night.

At the Moon's south pole there is "ample evidence," NASA planners point out, of enhanced hydrogen — an important natural resource for future development for energy generation, propellant production and other potential uses.

The poles can teach robotic and human explorers volumes about the Moon. This landscape is among the most complex of regions, yet very little is known about them.

To land equipment and scientific payloads near the lunar south pole, specifically, as opposed to another location, will require less propellant and could be more cost effective.

Check out the article at Fox News.

This is getting more and more interesting! I can't wait until this comes to fruition, then I can talk to my travel agent about lunar tourism!

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Thursday, December 14, 2006

Solar Storm!

Solar Storm

Northern Lights - Aurora Borealis

The Earth's Magnetosphere

Space weather forecasters revised their predictions for storminess after a major flare erupted on the Sun overnight threatening damage to communication systems and power grids while offering up the wonder of Northern Lights.

"We're looking for very strong, severe geomagnetic storming" to begin probably around mid-day Thursday, Joe Kunches, Lead Forecaster at the NOAA Space Environment Center, told SPACE.com this afternoon.

The storm is expected to generate aurora or Northern Lights, as far south as the northern United States Thursday night. Astronauts aboard the International Space Station are not expected to be put at additional risk, Kunches said.

Radio communications, satellites and power grids could face potential interruptions or damage, however.

Solar flares send radiation to Earth within minutes. Some are also accompanied by coronal mass ejections (CME), clouds of charged particles that arrive in a day or two. This flare unleashed a strong CME that's aimed squarely at Earth.

However, one crucial component to the storm is unknown: its magnetic orientation. If it lines up a certain way with Earth's magnetic field, then the storm essentially pours into our upper atmosphere. If the alignment is otherwise, the storm can pass by the planet with fewer consequences.

Kunches and his team are advising satellite operators and power grid managers to keep an eye on their systems. In the past, CMEs have knocked out satellites and tripped terrestrial power grids. Engineers have learned to limit switching at electricity transfer stations, and satellite operators sometimes reduce operations or make back-up plans in case a craft is damaged.

Another aspect of a CME involves protons that get pushed along by the shock wave. Sometimes these protons break through Earth's protective magnetic field and flood the outer reaches of the atmosphere—where the space station orbits—with radiation. The science of it all is a gray area, Kunches said. But the best guess now is that there will only be a slight increase in proton activity. That's good news for the astronauts.

"When the shock goes by, we don't expect significant radiation issues," he said.

The astronauts were ordered to a protective area of the space station as a precaution last night.

Now that sunspot number 930 has flared so significantly—after several days of being quiet—the forecast calls for a "reasonble chance" of more major flares in coming days, Kunches said.

Check out the article at Space.com.

If we could figure out a way to harness all of that energy, it would solve fuel problems for the entire globe!

We'll have to develop better radiation-shielding technology if we ever want to make significant ventures into space.

Check out the Solar Flare and Geomagnetic Storm articles at Wikipedia

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Friday, December 08, 2006

How We'll Get Back to the Moon

The Moon

Moonrise

Ares V Cargo Ship

Ares I Crew Ship

Moonbase

NASA has announced plans to establish a permanently-occupied lunar base with manned missions starting in 2020, a key step in further human exploration of the solar system.

The project, which would send humans back to the lunar surface for the first time since 1972, is a long-term joint effort of 14 of the world's space agencies, the National Aeronautics and Space Administration said Monday.

According to the current plan, which NASA described as a "blueprint for a return to the moon," robots would travel to the lunar surface ahead of manned missions to study the best landing sites and determine what natural resources would be available.

Then, starting in 2020, four-person crews bringing lunar exploration vehicles would be dispatched on a series of week-long missions to build living quarters equipped with their own power units.

Once permanent housing is established the program envisions lunar missions lasting 180 days.

NASA plans to set up a solar-powered base on one of the moon's poles that, once construction is completed, could serve as a forward base for manned missions to Mars.

"With such an outpost, NASA can learn to use the moon's natural resources to live off the land, make preparations for a journey to Mars, conduct a wide range of scientific investigations and encourage international participation," NASA said.

In 2004, US President George W. Bush had raised the idea of sending a manned exploratory mission to the red planet.

To help set out the goals of the lunar station, NASA consulted more than 1,000 experts. NASA officials talked to members of 13 other space agencies — including those of China, India, Russia and Ukraine — as well as experts from academic, public and private groups, and business interests.

This strategy will be "making optimum use of globally available knowledge and resources to help energize a coordinated effort that will propel us into this new age of discovery and exploration," said NASA Deputy Administrator Shana Dale.

NASA is developing a new crew capsule, the Orion, and new rocket engines, the Ares, for the mission. Test flights for the new rockets are scheduled for within two and a half years, and the Orion capsule is scheduled to be first flown around 2012.

In the meantime the space agency plans using the current space shuttle fleet until it is retired in 2010, with a focus on completing the building of the International Space Station.

NASA, Russia and the European Space Agency are currently constructing the ISS, in orbit around the Earth, which could itself be a springboard and operations base for the moon program.

Check out the article at Discovery News.

I really am looking forward to this! Just imagine how much more we will learn about the moon and surviving in space! It's going to be good practice for Mars.

Check out the really cool NASA feature: How We'll Get Back to the Moon!

UPDATE 12/29/06:

NASA is looking at the possibility of locating the first Moon Base on a crater rim at the South pole of the Moon.

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Friday, November 17, 2006

Hubble Space Telescope to get upgrade!

Hubble Space Telescope

Cats Eye Nebula - photo taken by Hubble Space Telescope

The terrific thing about NASA chief Michael Griffin’s decision to launch a Hubble servicing mission—the telescope’s fifth since 1990—isn’t simply that the spacecraft will be able to limp along for another four years. After astronauts visit Hubble on this latest mission (set to launch no earlier than May 2008), the telescope will be more powerful than it has ever been, thanks to some incredible new instruments being tested now.

The first is a replacement for Hubble’s main camera, the 13-year-old Wide Field Planetary Camera 2. The new camera, cleverly named the Wide Field Camera 3, will do everything the old camera did, but better. It’s like keeping all the lenses from your old film camera but upgrading to a professional-model digital SLR body.

I was lucky enough to be at the NASA Goddard Space Flight Center yesterday right after the announcement was made, and I spoke with James Green, principal investigator for the Cosmic Origins Spectrograph project, the other major upgrade scheduled for the servicing mission. The COS had just been loaded for testing into a sort of three-story-tall, 50-foot-wide Thermos that’s designed to replicate the vacuum and temperature extremes of space. It will pummel the COS for the next two months.

Above the din of the vacuum pumps, Green explained that the COS will be the first instrument that will allow scientists to track the 95 percent of normal matter in the universe that doesn’t glow—the interstellar gas clouds wafting between stars and galaxies. It will look at distant quasars and trace how these clouds absorb the quasars’ light. In this way, scientists can tell what elements and molecules the clouds are made of, and hence can map the hidden structure of the universe.

If all goes well, the servicing mission should keep the new, improved Hubble working until 2013, when its successor, the James Webb Space Telescope, is set to launch.

Check out the article at Popular Science.

Click Here to view the Hubble Slideshow!

I am so happy that they've decided to fix the Hubble Space Telescope! It has given us so many beautiful images, and taught us too much to just ditch it. Bravo NASA!!!

Check out my previous space posts: Space 15, Space 14, Space 13, Space 12, Space 11, Space 10, Space 9, Space 8, Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Friday, November 10, 2006

Monster Storm Spotted on Saturn

Saturn with Moons

Saturn Storm Collage

Saturn Storm Eye
Cassini stares deep into the swirling hurricane-like vortex at Saturn's south pole, where the vertical structure of the clouds is highlighted by shadows. Such a storm, with a well-developed eye ringed by towering clouds, is a phenomenon never before seen on another planet. Credit: NASA/JPL/Space Science Institute

NASA's Cassini spacecraft has seen something never before seen on another planet -- a hurricane-like storm at Saturn's South Pole with a well-developed eye, ringed by towering clouds.

The "hurricane" spans a dark area inside a thick, brighter ring of clouds. It is approximately 5,000 miles across, or two thirds the diameter of Earth.

"It looks like a hurricane, but it doesn't behave like a hurricane," said Andrew Ingersoll, a member of Cassini's imaging team at the California Institute of Technology, Pasadena. "Whatever it is, we're going to focus on the eye of this storm and find out why it's there."

A movie taken by Cassini's camera over a three-hour period reveals winds around Saturn's South Pole blowing clockwise at 350 miles per hour. The camera also saw the shadow cast by a ring of towering clouds surrounding the pole, and two spiral arms of clouds extending from the central ring. These ring clouds, 20 to 45 miles above those in the center of the storm, are two to five times taller than the clouds of thunderstorms and hurricanes on Earth.

Eye-wall clouds are a distinguishing feature of hurricanes on Earth. They form where moist air flows inward across the ocean's surface, rising vertically and releasing a heavy rain around an interior circle of descending air that is the eye of the storm itself. Though it is uncertain whether such moist convection is driving Saturn's storm, the dark "eye" at the pole, the eye-wall clouds and the spiral arms together indicate a hurricane-like system.

Distinctive eye-wall clouds have not been seen on any planet other than Earth. Even Jupiter's Great Red Spot, much larger than Saturn's polar storm, has no eye or eye-wall, and is relatively calm at the center.

This giant Saturnian storm is apparently different than hurricanes on Earth because it is locked to the pole and does not drift around like terrestrial hurricanes. Also, since Saturn is a gaseous planet, the storm forms without an ocean at its base.

Check out the article at Spaceflight Now.

Awesome imagery! It's amazing how much information we're learning in such a short period of time. Just imagine how much we'll know about our solar system in ten years!

We can only hope that we never see a storm of this magnitude here on Earth!

Check out my previous space posts: Space 14, Space 13, Space 12, Space 11, Space 10, Space 9, Space 8, Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Tuesday, November 07, 2006

Voyaging to Interstellar Space

NASA Voyager Mission

The Heliosphere

Voyager 1 logged yet another milestone in space history August 17 when it crossed an invisible boundary that marks 100 astronomical units (AU) from the Sun -- about 15 billion kilometers (9.3 billion miles) out there -- farther away than any human-made object has ever gone in space. It's headed now for interstellar space. Voyager 2, at 80 AU, is about six years behind.

Nearly 30 years after the twin Voyager spacecraft took off from Cape Canaveral, the mission has become a legend in its own time, rewriting the planetary science books, and introducing us to our own diverse neighborhood. The twins, meanwhile, have become the poster children of space exploration, still communicating after all these years and sending data home regularly via the Deep Space Network.

“One of our objectives was to explore interstellar space, and following the successful Saturn flyby in 1981, the mission was renamed the Voyager Uranus Interstellar Mission," said Voyager Chief Scientist Ed Stone, professor of physics and director of the Space Radiation Laboratory at the California Institute of Technology (Caltech), and a former director of the Jet Propulsion Laboratory (JPL), where the mission was designed and is being managed. "This was a boldly optimistic goal because we knew neither how long it would take to reach interstellar space nor how long the spacecraft would continue operating beyond their original 4-year mission to Saturn which is only 10 AU from the Sun. It is indeed remarkable that the Voyager spacecraft have already operated 7 times longer and 10 times further from the Sun than originally planned," he said.

"With some luck, the two will reach interstellar space while they still have electrical power," continued Stone, who has been the project scientist on the mission since 1972, overseeing the efforts of 11 teams of scientists in their studies of Jupiter, Saturn, Uranus, and Neptune. "Whether they reach interstellar space or not under power, they will be -- and [Isaac] Newton tells us this -- humankind's first interstellar probes, the first objects launched from Earth to reach interstellar space. Crossing into interstellar space will be a major milestone in our journey from Earth into the Milky Way."

Check out the article at The Planetary Society.

Together, Voyager 1 and Voyager 2 -- twin probes launched on September 5, 1977 and August 20, 1977 -- represent the most successful planetary exploration mission of all time. In their flybys of all the outer planets, and dozens of other planetary bodies, the Voyagers set the benchmark in planetary exploration on an undertaking that has come to be deemed as one of NASA’s greatest triumphs.

The two 1-ton spacecraft returned more knowledge-changing data than any mission before or since: stunning photographs that consistently revealed our solar system to be much more diverse, complex, and beautiful than anyone ever imagined, and a veritable bounty of scientific information to go along with them.

Even now, both Voyager spacecraft are still communicating with Earth. Many of their instruments are still functioning, as the two spacecraft head in different directions out of the solar system on their "Interstellar Mission." Voyager 1 has now passed the termination shock, where the solar wind abruptly slows down as it pushes against the interstellar medium.

Check out my previous space posts: Space 13, Space 12, Space 11, Space 10, Space 9, Space 8, Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Tuesday, October 17, 2006

It's All in the Lighting

Backlit Saturn Halo - 2006 Cassini Photo

Backlit Saturn - 2006 Cassini Photo

Saturn's Rings

Taking advantage of a rare photo moment, scientists using the Cassini spacecraft have found faint new rings circling Saturn and hints of hidden moons.

The images were taken as Saturn was virtually dead-set centered in front of the sun, as viewed by the orbiting Cassini probe. Cassini's cameras detected two new wispy trails of particles lit up like streams of dust in front of a brightly lit window, and confirmed two other previously discovered rings.

Scientists believe the rings are dust particles caused by asteroids or comets striking the surfaces of small inner moons circling Saturn. The moons' gravity is too weak to hold on to any kind of surface dust, so impacts blast material into Saturn's orbit, where the particles assemble into loosely packed rings in the moons' orbital paths.

Check out the article at Discovery News.

Some really awesome photography is coming back from space! Just imagine what kind of technology will be on-board future satellites!

Check out my previous space posts: Space 12, Space 11, Space 10, Space 9, Space 8, Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Monday, October 16, 2006

Asteroid Defense?

Asteroid!

Deep Impact

Experts say there are an estimated 1,100 known objects that are 1 kilometer (about a half-mile) or wider across — large enough to not only take out a sizable European country but threaten the entire world.

"The goal is to discover these killer asteroids before they discover us," said Nick Kaiser of the University of Hawaii's Institute for Astronomy, whose Pan-STARRS program will train four powerful digital cameras on the heavens to watch for would-be intruders.

NASA's Spaceguard Survey, which already has identified 800 of the larger objects and has 103 on an impact risk watchlist, wants to find 90 percent by the end of 2008.

The U.S. Congress has asked the space agency for a plan to comb the cosmos for faint objects as small as 140 meters (153 yards) across and log their position, speed and course by 2020.

Astronomers will have their work cut out for them: Experts say there are about 100,000 such objects hidden among the haze of stars, and as many as 1 million half that size.

One known as the Tunguska object slammed into remote central Siberia in 1908, unleashing energy equivalent to a 15-megaton nuclear bomb and wiped out 60 million trees over an 830-square-mile area. Had it hit a populated area, the loss of life would have been staggering.

Giovanni Valsecchi of Italy's National Institute of Astrophysics said the ultimate aim is a permanent warning system like those that now monitor the Pacific for tsunamis and keep tabs on volcanoes and earthquake zones.

The idea: Give the world enough lead time to come up with a workable response to a confirmed threat, such as sending up a rocket to deflect an Earth-bound object or a spacecraft to nudge it into a harmless orbit.

"Right now, unfortunately, there are no 'asteroid busters' or hotlines. Who ya gonna call?" said Andrea Milani Comparetti, a professor of mathematics at the University of Pisa.

The IAU offered some reassurance Thursday about 99942 Apophis, a smallish asteroid that will come within just 18,000 miles of Earth when it whizzes by in 2029. That's closer than many commercial satellites, and 220,000 miles nearer than the moon.

Last year, scientists were concerned Apophis could come even closer in another fly-by in 2036, with a 1-in-5,500 chance of striking Earth with enough energy to wipe out New York City and its suburbs.

Check out the article at Fox News.

You have to wonder how many asteroids are out there heading this way. It might be a good idea to form some kind of contingency plan to avoid potential impacts.

Check out my previous space posts: Space 11, Space 10, Space 9, Space 8, Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Tuesday, October 03, 2006

Space Elevator

Space Elevator

Space Elevator Diagram

Space Elevator Concept

Space Elevator Concept

Admittedly, at least for now, the idea of a beanstalk-like space elevator connecting Earth and space is a stretch.

But next month’s X Prize Cup will host the Space Elevator Games, an unprecedented challenge for today’s engineers looking at ways to alter the future of access to space.

Teams from around the country will gather October 20-21 in Las Cruces, New Mexico to compete for $400,000 in prize money as part of NASA’s Centennial Challenges—the space agency’s program of prize contests to stimulate innovation and competition in solar system exploration.

No matter how you look at it—from the top down or bottom up—building a full-scale space elevator is an uphill battle. But at least physics is in your favor.

The concept is a system utilizing an ultra-strong ribbon that extends from the surface of the Earth to a point beyond geosynchronous orbit. The ribbon is held in place by a counterweight in orbit. As the Earth rotates, the ribbon is held taut. Vehicles would climb the ribbon powered by a beam of energy projected from the surface of the Earth. [See video animation here.]

Visionaries like science fact/fiction writer, Sir Arthur C. Clarke, are space elevator advocates.

Still, wordsmithing the technology is a far cry from hammering it out for real, and there are those who believe the innovations and breakthroughs needed, like nanotubes, might not work.

Check out the article at Space.com.

What an awesome concept! This would be a major investment, but would save so much fuel and energy in the long run that it would be a bargain for whoever builds it. We just need to make sure we keep such a major project out of any one entity's possession... it needs to be a world collective project.

On the other hand, just read Red Mars to see what kind of catastrophe the sabotage of a Space Elevator would be.

For more information on the Space Elevator concept, visit Wikipedia or NASA Science.

Check out my previous space posts: Space 10, Space 9, Space 8, Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Wednesday, September 27, 2006

A New Look at an Old Face

Valles Marineris - The Grand Canyon of Mars

Face on Mars - 1976 Viking Orbiter 1 Photo

New Look at an Old Face

The famous "Face on Mars" has gotten another close-up.

The European Space Agency has released new, highly detailed images of the controversial, face-like formation first captured by a Viking orbiter at Mars’ Cydonia region in 1976.

The Face may be a popular target for orbiters – NASA’s Mars Global Surveyor snapped images in 1998 and 2001 – but it’s not an easy one.

The site, located at 41 degrees north Martian latitude, is often obscured by atmospheric dust and haze. Still, after several attempts, the High Resolution Stereo Camera on board ESA’s Mars Express captured a series of images with a ground resolution of approximately 13.7 meters per pixel.

"These images of the Cydonia region on Mars are truly spectacular," said Agustin Chicarro, ESA Mars Express Project Scientist. "They not only provide a completely fresh and detailed view of an area famous to fans of space myths worldwide, but also provide an impressive close-up over an area of great interest for planetary geologists."

Chicarro and his team say the high-resolution images further confirm what NASA scientists have been saying for years: It’s not a face, but a raised, eroded surface.

NASA’s chief scientist for Mars exploration, Jim Garvin, describes the formation as the equivalent of a butte or mesa, landforms common around the American West. Such formations are common in Mars’ Cydonia region, which is located between the planet’s southern highlands and northern plains.

But then, some may never be convinced.

Since the spooky, face-like structure was first photographed by NASA’s Viking 1 Orbiter 30 years ago, the site has been the subject of breathless speculation.

In movies, books and on the Web, some have argued this is a massive sculpture built by intelligent life and that surrounding conical-like structures are pyramids, or remnants of a great city, built by a complex civilization.

Check out the article at Discovery News.

Natural shapes can take on many forms when viewed with the human eye... ever looked for shapes in clouds?

For more information on Mars, visit The Nine Planets or NASA Solar System Exploration.

Check out my previous space posts: Space 9, Space 8, Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Wednesday, September 20, 2006

Upgraded Space Station May Rival Venus in Night Sky

The biggest and brightest man-made object orbiting Earth just got bigger and brighterInternational Space Station - 2006

International Space Station - 2005

Space Shuttle Atlantis

Astronauts on board the international space station unfurled a new pair of solar-energy panels that sprout out of the end of a new 17.5-ton truss section, which was brought up by the space shuttle Atlantis.

They are the largest solar panels ever taken to space; fully unfolded, they reach a length of 240 feet (73 meters).

They are designed to double the ISS' capability to generate power from sunlight when they go online during a future shuttle mission.

Like other satellites, the ISS shines by virtue of sunlight reflected off of its metallic skin. The station orbits approximately 213 miles (341 kilometers) above Earth.

How bright?

Before the ISS spread its new pair of gold wings, it was already the brightest of all space vehicles, at times appearing to shine with a brilliance equal to the planet Jupiter.

Now skywatchers should notice the orbiting outpost glowing with an even greater luster.

Nobody knows exactly how much brighter it will be, but there's a good chance that it could be brighter than magnitude -3, approaching the glow of Venus, the brightest planet.

On this astronomers' scale, smaller numbers denote brighter objects, and negative numbers are reserved for the handful of the very brightest.

The ISS will likely get even brighter. The solar panels are only the second of four planned arrays that will be deployed between now and when the shuttle fleet retires in the year 2010.

When to look

Skywatchers across much of North America will have opportunities to see the ISS in the coming weeks.

To the unaided eye, it appears as a large "star" with a yellowish-white tint that moves with a steady speed across the sky.

Beginning late next week and running through the first two weeks of October, early risers will be able to look for the station in the dawn twilight if skies are clear.

Starting in mid-October, it will make passes during convenient evening hours, soon after sundown.

To find out if the international space station will pass over your hometown, go to NASA's tracking page or the Heavens Above web site.

Amateurs with large telescopes and some knowledge of astrophotography have in the past had success photographing the space station.

Check out the article at Fox News.

I'm hoping to catch a good photo of it this month!

Check out my previous space posts: Space 8, Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Thursday, September 07, 2006

Dark Matter

Purple Haze flanking the Bullet Cluster
A purple haze shows dark matter flanking the "Bullet Cluster."

Bullet Cluster bending light
The Hubble Space Telescope was used to observe how the Bullet Cluster bent light coming from background stars.

As a rule, scientists seek certainty. So it's rather unusual that for more than 70 years, many astronomers have wagered the universe is primarily made of dark matter -- a mysterious and unproven substance.

It's a bet that finally paid off, because a team of scientists working with NASA's Chandra X-ray Observatory has found direct evidence that dark matter is as real as the rings around Saturn.

The discovery cements dark matter's status as the biggest building block in the universe, while also putting to rest the nagging worries of many astronomers that they gambled wrong.

Dark matter's murky nature has always sat a bit uneasily with astronomers. "It is uncomfortable for a scientist to have to invoke something invisible and undetectable to account for 90 percent of the matter in the universe," said Maxim Markevitch, a Chandra astrophysicist and researcher with the study.

One of the main arguments for the existence of dark matter involves galaxies and their clusters. Galaxies whip through space at enormous speeds and are searing with hot clouds of gas. Speed and heat of galaxies should cause them to fly apart, but they don't. A leading explanation for this is that the gas and stars are held together by the gravity of dark matter. Belief in dark matter is widespread across the scientific community, but astronomers don't know what it's made of. Still, they believe it acts like it has mass and exerts gravity, yet is invisible and can't bump, touch or crash into anything.

Like determining the origin of the universe or how black holes work, dark matter is one of the holy grails of astronomy. "Little is known about it; all that the numerous searches for dark matter particles have done is rule out various hypotheses, but there have never been any 'positive' results," said Markevitch.

Doug Clowe, leader of the study, set out to see if believing in dark matter was wishful thinking or informed faith. "A universe that's dominated by dark stuff seems preposterous, so we wanted to test whether there were any basic flaws in our thinking," said Clowe.

Check out the article at NASA.

It is important that we continue to research this phenomenon... it will lead to a better understanding of the universe as a whole and will probably generate new resources and technologies in the process.

Check out my previous space posts: Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Thursday, August 31, 2006

SMART-1 Poised for Smashing Finale

Lunar Probe SMART-1

Lunar Probe SMART-1

After nearly two years circling the moon, a European robotic probe is wrapping up its mission while flight controllers prepare for a scientific grand finale: a crash onto the moon's surface this weekend.

SMART-1 was launched in September 2003 and reached the moon 14 months later for what was expected to be a six-month mission to test technologies for future robotic probes. The spacecraft, however, proved to be extremely robust, winning funding for two mission extensions.

In the end, the probe simply ran out of gas for its innovative solar-electric engine, one of several technologies tested on Europe's first Small Mission for Advanced Research in Technology (SMART) spacecraft.

It will be tugged out of orbit by lunar gravity late Saturday or early Sunday, crashing into a volcanic plain known as the Lake of Excellence, a fitting resting spot for a spacecraft that far surpassed scientists' expectations.

Flight controllers made a final series of maneuvers to position the probe so its crash onto the moon's surface would be detectable from Earth. Scientists using ground-based telescopes planned to scan the dust kicked up in the crash to detect chemicals in the lunar soil.

Check out the article at Discovery News.

Break out your telescopes and be sure to be watching the southern portion of the moon on Sunday, September 3, 2006 at approximately 11:40pm Central Time. It won't be anything spectacular, but a plume of dust should be visible. It's definitely worth a look!

Be sure to check out the SMART-1 website for more information.

Check out my previous space posts: Space 7, Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Thursday, August 24, 2006

Pluto Gets the Boot!

New Solar System
Our New Solar System (click for detail view)

Our 8 Planets
The Eight Planets

Dwarf Planets
Dwarf Planets

PRAGUE, Czech Republic — Leading astronomers declared Thursday that Pluto is no longer a planet under historic new guidelines that downsize the solar system from nine planets to eight.

After a tumultuous week of clashing over the essence of the cosmos, the International Astronomical Union stripped Pluto of the planetary status it has held since its discovery in 1930.

The new definition of what is — and isn't — a planet fills a centuries-old black hole for scientists who have labored since Copernicus without one.

For now, membership will be restricted to the eight "classical" planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Much-maligned Pluto doesn't make the grade under the new rules for a planet: "a celestial body that is in orbit around the sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a ... nearly round shape, and has cleared the neighborhood around its orbit."

Pluto is automatically disqualified because its oblong orbit overlaps with Neptune's.

Instead, it will be reclassified in a new category of "dwarf planets," similar to what long have been termed "minor planets."

The definition also lays out a third class of lesser objects that orbit the sun — "small solar system bodies," a term that will apply to numerous asteroids, comets and other natural satellites.

Check out the article at Fox News.

I guess it's time to re-print a few million new school textbooks.

Check out my previous space posts: Space 6, Space 5, Space 4, Space 3, Space 2 and Space 1

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Friday, August 04, 2006

Rocketplane!

Rocketplane

Rocketplane Plan
click photo for high detail

Who would be crazy enough to try to blast a rocketized Learjet (hardly a vehicle designed for the rigors of spaceflight) at three times the speed of sound out of the atmosphere—with demanding rich people on board? Top engineers recruited from NASA and mainline aerospace firms such as Lockheed Martin, Cessna and even Learjet itself, as it turns out. Sometime in 2008, Rocketplane says, its creation, called the Rocketplane XP, will take off from a runway powered by the Learjet 25’s stock General Electric CJ610 jet engines with three passengers and a pilot on board. It will climb to 25,000 feet, where it will ignite its rocket. A 70-second boost will send the ship coasting out of the atmosphere—66 miles above Earth—for four minutes of weightless flight and a view stretching west to the Rocky Mountains and south to the Gulf of Mexico. The spaceship will reenter the atmosphere in a controlled, if bumpy, glide like the space shuttle and restart the jets at 25,000 feet for a powered landing back home.

Check out the article at Popular Science.

Check out the Rocketplane website.

I'm not even going to ask how much a ticket costs.

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Monday, July 31, 2006

Feel Insignificant Yet?

Earth

Earthrise

Our Solar System to scale

Our Solar System to scale

Our Solar System to scale

Our Sun to scale

Our Sun to scale

Pale Blue Dot

We succeeded in taking that picture [from deep space], and, if you look at it, you see a dot. That's here. That's home. That's us. On it, everyone you ever heard of, every human being who ever lived, lived out their lives. The aggregate of all our joys and sufferings, thousands of confident religions, ideologies and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilizations, every king and peasant, every young couple in love, every hopeful child, every mother and father, every inventor and explorer, every teacher of morals, every corrupt politician, every superstar, every supreme leader, every saint and sinner in the history of our species, lived there on a mote of dust, suspended in a sunbeam.

The earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that in glory and in triumph they could become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of the dot on scarcely distinguishable inhabitants of some other corner of the dot. How frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds. Our posturings, our imagined self-importance, the delusion that we have some privileged position in the universe, are challenged by this point of pale light.

Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity -- in all this vastness -- there is no hint that help will come from elsewhere to save us from ourselves. It is up to us. It's been said that astronomy is a humbling, and I might add, a character-building experience. To my mind, there is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly and compassionately with one another and to preserve and cherish that pale blue dot, the only home we've ever known.

- Reflections on a Mote of Dust - Carl Sagan

For those interested in astronomy, there are tons of sites out there where you can quench your thirst for knowledge. Among my favorites are NASA's Solar System Exploration, Nine Planets, NASA's World Book page and NASA's Visible Earth.

I've always had an interest in astronomy, but it took accompanying my son on a field trip to the BREC Highland Road Obervatory to spark it up again!

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Monday, July 24, 2006

NASA's CloudSat Mission

Revealing the inner secrets of clouds!
NASA CloudSat

Rainbow Clouds

Noctilucent Clouds

Cumulous Clouds
Cumulous Storm Clouds - photo by Renegade

In early 2006, NASA launched the CloudSat and the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to study the role that clouds and aerosols play in regulating Earth's weather, climate and air quality.

Scientists are improving their understanding of Earth's climate system, but many questions remain. Weather and climate models, the prediction tools scientists use to study the Earth system, are complicated, and the information scientists use to build the models is incomplete. CloudSat and CALIPSO will collect information about the vertical structure of clouds and aerosols unavailable from other Earth observing satellites. Their data will improve our models and provide a better understanding of the human impact on the atmosphere. Policy makers and business leaders will make more informed long-term environmental decisions about public health, the economy and better day-to-day weather predictions as a result of these missions.

For the first time from Earth orbit, CloudSat and CALIPSO will:
- Provide statistics on the vertical structure of clouds around the globe (both missions)
- Provide statistics on the geographic and vertical distribution of aerosols around the globe (CALIPSO)
- Provide estimates of the percentage of Earth's clouds that produce rain (CloudSat)
- Detect subvisible clouds in the upper troposphere and Polar Stratospheric Clouds (CALIPSO)
- Provide vertically-resolved estimates of how much water and ice are in Earth's clouds (CloudSat)
- Detect snowfall from space (CloudSat)
- Estimate how efficiently the atmosphere produces rain from condensates (CloudSat)
- Provide an indirect estimate of how much clouds and aerosols contribute to atmospheric warming (both missions)

Check out the article at NASA's Homepage.

Check out the CloudSat Animation

Some excellent images are coming back from these satellites! Just imagine how much extraordinary data they will provide!

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Thursday, June 22, 2006

Mining the Moon

Mining the Moon

Crashing Moon screenshot from The Time Machine
screenshot from The Time Machine

Before NASA sends astronauts to live on the moon in 2020, per presidential mandate, the agency must first figure out what resources the lunar neighborhood has to offer. Are there stores of ice that could be melted and processed to provide oxygen to breathe and hydrogen for rocket fuel? Or is the potential fuel locked up inside rocks? To find out, NASA has a simple yet ingenious plan, set to launch in 2008: Slam two chunks of steel into a crater near the moon’s southern pole and study what flies out. Of top interest is hydrogen, discovered beneath the soil during previous missions. The key here, says NASA investigator Anthony Colaprete, is that scientists will finally learn how the hydrogen is stored—in ice, minerals or as free protons in the lunar soil. This information, he explains, “will tell us which way we need to go in terms of the technology for extracting it.”

Launch this slideshow to see how LCROSS will bring NASA one step closer to its lunar home away from home.

Check out the article and video at Popular Science.

I wonder if they've seen The Time Machine! In the movie, humans miscalculated the impact of demolitions during the colonization of the moon... throwing the orbit off and sending it crashing down on us, nearly rendering mankind extinct.

I hope NASA knows what they're doing!

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Thursday, May 18, 2006

Space, The Final Frontier...

Planets Found in Potentially Habitable Setup
HD 69830 Planets

Three medium-sized planets of roughly the same mass as Neptune have been discovered around a nearby Sun-like star, scientists announced today.

The planets were discovered around HD 69830, a star slightly less massive than the Sun located 41 light-years away in the constellation Puppis (the Stern), using the ultra-precise HARPS spectrograph on the European Southern Observatory's 3.6-meter La Silla telescope in Chile.

The finding, detailed in the May 18 issue of the journal Nature, marks a first for astronomers because previously discovered multi-planet solar systems besides our own contain at least one giant, Jupiter-sized planet.

"For the first time, we have discovered a planetary system composed of several Neptune-mass planets," said study team member Christophe Lovis of the Geneva Observatory in Switzerland.

The setup is similar to our own solar system in many ways: The outermost planets is located just within the star's habitable zone, where temperatures are moderate enough for liquid water to form, and the system also contains an asteroid belt.

The newly discovered planets have masses of about 10, 12 and 18 times that of Earth and they zip around the star in rapid orbits of about 9, 32 and 197 days, respectively.

Based on their distances from the star, two inner worlds nearest the star are rocky planets similar to Mercury, the scientists suspect. The outermost planet is thought to have a solid core of rock and ice and shrouded by a thick gas envelope.

Recent observations by NASA's Spitzer Space Telescope last year revealed that HD 69830 also hosts an asteroid belt, making it the only other Sun-like star known to have one.

Check out the article at Space.com.

I wonder how long it will be before we have the technology to make the trip and colonize those planets, and others like them. Our planet really is a sitting duck for some random space collision. At least we could lessen the odds of having our entire civilization wiped out with one collision.

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Tuesday, May 02, 2006

Warp Speed Ahead!

Warp Speed

In a rush to flee the solar system? Scientists have an interstellar travel plan, but it entails a brief stint outside the known universe.

What is Warp Speed? A spacecraft that travels at faster-than-light speeds by distorting, or “warping,” the fabric of spacetime. Instead of trying to move through space, the warp drive moves space itself. The ship sits inside a bubble of spacetime bound by a negative energy field that races across the cosmos.

1. Fuel Up: Start beyond Earth’s immediate gravitational pull. Convert matter into negative energy (particles with negative mass that are repelled by gravity rather than attracted to it).

2. Curve Spacetime: Emit pulses of negative energy to curve spacetime. Form a sphere around the ship with the energy, insulating passengers in their own private spacetime bubble.

3. Drop Out: The bubble warps spacetime so drastically that it actually slips out of the visible universe. Only a narrow tube of negative energy keeps it tied to our world.

4. Expand Space: Now that the craft is protected in its spacetime bubble, the real work can begin: Expand space behind the bubble at faster-than-light speed, and shrink the space in front.

Read the article at Popular Science

Next Week: "Beam Me Up, Scotty!"

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Thursday, April 13, 2006

Total Eclipse

Total Eclipse

Eclipse Time Lapse

On Wednesday, March 29, 2006 a total eclipse of the Sun was visible from within a narrow corridor which traverses half the Earth. The path of the Moon's umbral shadow begins in Brazil and extends across the Atlantic, northern Africa, and central Asia where it ends at sunset in western Mongolia. A partial eclipse will be seen within the much broader path of the Moon's penumbral shadow, which includes the northern two thirds of Africa, Europe, and central Asia.

Check out the NASA Eclipse Home Page for more information.

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Wednesday, March 22, 2006

Celestial Double Helix

Celestial Double HelixCelestial Double Helix negative

Magnetic forces at the center of the galaxy have twisted a nebula into the shape of DNA, a new study reveals.

The double helix shape is commonly seen inside living organisms, but this is the first time it has been observed in the cosmos.

"Nobody has ever seen anything like that before in the cosmic realm," said the study's lead author Mark Morris of UCLA. "Most nebulae are either spiral galaxies full of stars or formless amorphous conglomerations of dust and gas—space weather. What we see indicates a high degree of order."

These observations, made with NASA's Spitzer Space Telescope, are detailed in the March 16 issue of the journal Nature.

Read the article at Yahoo News.

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