Satellite likely fell in Pacific; 'we may never know'

Where in the world is NASA's crashed satellite? On the ocean floor most likely, what's left of it, but nobody seems to know for sure. The best bet is that the fiery breakup of NASA's Upper Atmosphere Research Satellite (UARS), designed to study atmospheric chemistry, scattered debris across a 500-mile swath of the Pacific Ocean. Coming decades after the nuclear era led to U.S. missile-warning radars being placed around the globe, the question remains: Why it wasn't possible to pinpoint the exact areas where pieces of the NASA satellite fell to Earth? More

(Source: USA Today - Sep 28)