A nearly 6-ton satellite is gradually falling from Earth orbit, and parts of it could crash to the surface as early as Friday, September 23 (today), NASA officials said. NASA officials told ABC News overnight that they won't know where the satellite will hit until two hours before it enters the Earth's atmosphere, moving at 5 miles per second. The space agency's space debris experts predict that at least 26 large pieces of the satellite will survive the scorching temperatures of atmospheric re-entry. But exactly where the UARS satellite debris will fall is uncertain. NASA officials have said that the drop zone for UARS satellite debris could be anywhere between the latitudes of northern Canada and southern South America, an area that includes much of the planet. The satellite should re-enter over a 500-mile (804-kilometer) track, according to NASA officials. Since 75 percent of Earth is covered with ocean, there is a high likelihood that the satellite will re-enter ov...
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