Space Satellite UARS Falling From Orbit

A nearly 6-ton satellite is gradually falling from Earth orbit, and parts of it could crash to the surface as early as Sept. 23, NASA officials said. The UARS -- short for Upper Atmosphere Research Satellite -- has been in orbit since the space shuttle Discovery launched it in 1991, but it's gradually coming closer and closer to the ground as it encounters friction from the upper reaches of the atmosphere. NASA officials told ABC News overnight that they won't know where the satellite will...Full Story
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