NASA's Upper Atmosphere Research Satellite, launched aboard the space shuttle in 1991, will re-enter Earth's atmosphere in late September or early October.
UARS is 35 feet long, 15 feet in diameter, and weighs 6.5 tons. Computer models suggest, however, that only about a thousand pounds of that will reach the ground. That's still quite a bit of stuff, but NASA points out no one has ever been injured by such falling debris.
Exactly where that debris will hit is not yet clear, but NASA is closely monitoring the satellite's path, and will refine its projections of where and when the debris will reach the surface right down to the event, and will keep the public informed.
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