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[i]They said there was no immediate risk to the international space station and its crew of three -- which orbits about 270 miles below the collision -- or to an upcoming shuttle launch to the station. The Hubble Space Telescope, which orbits about 160 miles higher than the space station, is also not considered at risk, NASA officials added. ...right now, they're most worried that orbiting wreckage from the crash could damage or destroy a nearby flock of five satellites, called the A-Train, which monitor Earth's climate. "The risk is increased. I can't tell you the magnitude of that risk, whether it went up 1 percent, 5 percent or 10 percent. We don't have a lot of information yet to quantify," Johnson said. More answers should be coming in the next few days, he said. NASA launched the first A-Train satellite in 2002 and since has added four more probes to the close-flying formation, which measures a wide range of data, from radiation to rainfall. A sixth satellite, the Orbiting Carbon Observatory, is scheduled to join the group this month to help track carbon dioxide.[/i]
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