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Astronauts Work on Hubble Repairs

By MARCIA DUNN
,
AP
posted: 1 HOUR 7 MINUTES AGO
comments: 84
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CAPE CANAVERAL, Fla. (May 15) — Spacewalking astronauts had to put a refurbished pair of gyroscopes into the Hubble Space Telescope after a brand new set refused to go in Friday, but scientists were satisfied nonetheless and confident the observatory would point precisely to ever more distant objects in the cosmos.
Replacing the gyroscopes was the top priority of the repair mission, and the struggle had NASA on edge for two hours.
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Thanks to the spacewalkers' effort, Hubble ended up with four brand new gyroscopes and two refurbished ones that were original 19-year-old telescope parts, said to be almost as good as the new ones. The telescope also got fresh batteries.
It was the second spacewalk in as many days for the Atlantis astronauts, who once again were bedeviled by problems. On Thursday, another two-man team installed a powerful new camera and a computer data unit, after struggling with a stubborn bolt. NASA had hoped for an easier, less stressful spacewalk, but instead had to endure more drama.
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As on Thursday, the astronauts got their work done, but it was harder and took longer than expected. Friday's spacewalk was one of the longest ever, lasting nearly eight hours, and Mission Control told the weary crew members that they could sleep in and start Saturday's spacewalk a little late.
Michael Massimino, who was working from inside Hubble, and his partner, Michael Good, had no problem removing all six of Hubble's 10-year-old gyroscopes. But the last set of new gyroscopes wouldn't fit properly.
Mission Control instructed the men to go get a spare box of gyroscopes from the shuttle, and put that one in. This spare set originally was launched aboard Hubble in 1990 and returned in 1999.
The astronauts successfully installed the refurbished set. By then, however, five hours of the spacewalk had passed and they had yet to start on the other major chore of the day, the battery swap.
The gyroscopes were the No. 1 task, though. Three of the old gyroscopes no longer worked, and two others had been acting up. The other had seen a lot of use.
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Space.com: Astronauts' Favorite Hubble Photos
"My friend Leonidas has a couple of words for you guys that are appropriate right now," shuttle commander Scott Altman told the spacewalkers, referring to the ancient Spartan king. "Remember this day, men, for it will be yours for all time." Then Altman laughed. Leonidas died in battle in 480 B.C.
"We've got a little more work to do, but thanks," replied Massimino.
Hubble's deputy senior project scientist, Mal Niedner, said he was not concerned the astronauts had to resort to refurbished gyroscopes. They lack the latest anticorrosive wiring, but it's "the difference between an A and an A-plus."
In all, five spacewalks are planned so that the observatory — beloved by astronomers and many others for its breathtaking views of the universe — is at its apex while living out its remaining years. Scientists expect the upgraded Hubble to look back even further in time, to within 500 million to 600 million years of creation.
Good drove in the bolts for the gyroscope boxes as Massimino, a returning Hubble mechanic who is over 6 feet tall, worked from inside the telescope, where he had wedged himself in head first. "Trained my whole life for this," he said.
Massimino had a brief scare when his communication system fouled up at the start of the spacewalk. For a minute or two, no one could hear him.
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That wasn't the only unnerving thing about this mission.
Space is particularly littered in this 350-mile-high orbit, and Atlantis and its crew face a greater risk of being slammed by a piece of junk. As a precaution, NASA has a rescue shuttle on standby, ready to launch in just three days if necessary.
Even though the spacewalk was running behind, the astronauts pressed on and replaced some batteries.
The hefty, nickel hydrogen batteries that came out were built before the telescope was launched in 1990. They come three to a pack, about the size of a big TV set with a mass of nearly 500 pounds. The final three batteries will be replaced early next week.
The unused new gyroscopes, meanwhile, will be analyzed once they're returned to Earth.
NASA hopes to get another five to 10 years of use out of Hubble, once the Atlantis astronauts plug in all the new equipment. They also will take a crack at fixing two broken science instruments this weekend.
The mission cost NASA more than $1 billion, one-tenth of what has been spent on Hubble over the decades.
AP Science Writer Seth Borenstein in Houston contributed to this report.
Copyright 2009 The Associated Press. The information contained in the AP news report may not be published, broadcast, rewritten or otherwise distributed without the prior written authority of The Associated Press. Active hyperlinks have been inserted by AOL.
2009-05-15 11:20:35
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Sixeyess4dinner

06:20 PMMay 15 2009

Yakami11 06:11 PMMay 15 2009 Shhh, I want to let you in on a secret. You notice how everything is going real smooth and right. How everything is getting fixed? It;s becuase they left the woman behind this time.@@@@@@ Astronaut K. Megan McArthur is female and is the mission specialist that catured the Hubble Telescope with the shuttle's robotic arm.......................

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Yakami11

06:11 PMMay 15 2009

Shhh, I want to let you in on a secret. You notice how everything is going real smooth and right. How everything is getting fixed? It;s becuase they left the woman behind this time.

AVG RATING:
(2)

Mkw737

05:33 PMMay 15 2009

At 1 Billion per launch, the Shuttle is finally getting retired and Obama's admin will review NASA in a comprehensive way. I don't believe they will fund much beyond unmanned missions in this time of fiscal crisis --- found a cool site; Balkingpoints ; incredible satellite view of earth

AVG RATING:
(2)

JArlieWilson

04:57 PMMay 15 2009

"The mission cost NASA one billion dollars"...<insert pinkie against bottom lip> Hey, that kind of technology is priceless. My spouse is a scientist working on the NIF project at the LLNL. You have no idea what kind of money big brother has spent there...can you imagine the conversation that NASA had with Michael Massimino? "Hey, Mike we need you to fix some gyroscopes," "But they're 350 miles up into space, sir." "Yeah ,we know. Put on this suit, take this radio, and get up there, stat." "I'm too tall." "No worries, squeeze in there, your nation is depending on you." "Can I take a helper?" "Uh, yeah, take Mike with you." "Can I have a raise when I get back?" "No. And watch out for the space junk...bye."

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(2)

Libdamage

04:00 PMMay 15 2009

Nuclear energy can be made to be quite safe.For example it can be made into lead pellets with the Uranium (or Plutonium or other fissionable material) inside.Even if all the pellets fall together in a crash, there would be enough lead to stop it from detonating as a bomb and the lead would also stop it from leaking nearly as much radiation as if it were not sealed in lead.While nothing can be guaranteed "TOTALLY and PERFECTLY" safe,I believe this can be made safer then other risks we take on a daily basis.

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(3)

Dal31550

04:00 PMMay 15 2009

I paid for it and I want it. I'm a spoiled brat. Don't dump it. Fix that antigue if you can. I'd like a '63 Chevy SS convertible black with a red interior with a white top, 327 four barrel.

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(2)

Sixeyess4dinner

03:53 PMMay 15 2009

Kcdgenius 03:42 PMMay 15 2009 "".........................ITS WORSE THAN NUCLEAR, ITS THE CCD Camera base and it has been collecting PHOTONS from distant galaxies, novas, and quasars for the last 15 years. It is so packed full of accumulated photons that... I cant bear to even think about it. The space shuttle might vaporize over texas in a brillant pulse of light that would wipe out all life in the northern hemisphere!@@@@@@@ Those photons are nasty critters, but it's the widespread (on Earth) use and exposure to dihydrogenoxide that will be the end of us all.................

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Libdamage

03:52 PMMay 15 2009

Yeah we have plenty for illegal aliens, but not for scientific exploration and technological develoment.Lest stop all scientific funding because we aren't becomming a technologically backward third world country, fast enough.19999999999999999997999999999999991oooooooooooAreischelb 03:14 PMMay 15 2009 I 'll bet the rest of the world is helping uncle sap with funds so we can continue these space ventures . Geeze , I thought we were in a deep recession , guess not !

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Sixeyess4dinner

03:48 PMMay 15 2009

""WASHINGTON....NASA is running out of nuclear fuel need for deep space exploration. The end of the Cold War's nuclear weapons buildup means that the US Space Agency does not have enough plutonuim for future faraway space probes....except for a few missions already scheduled.....Deep space probes beyond Jupiter can't use solar power because they're too far from the sun. So they rely on a certain type of plutonium, plutonium-238..... isn't found in nature; it's a byproduct of nuclear weaponry. The United States stopped making it about 20 years ago and NASA has been relying on the Russians...The Department of Energy announced that it will restart its program to make plutonium-238..."" http://www.calgarysun.com/news/world/2009/05/07/9382836.html

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Sixeyess4dinner

03:45 PMMay 15 2009

Dal31550 03:32 PMMay 15 2009 ""........I don't want it floating around especially if it's nuclear or atomic.@@@@@ Hubble components are powered by batteries, charged by solar arrays...........

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(3)

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