Predicting When Space Junk Will Come Home To Earth

This weekend, a defunct German satellite is scheduled to crash to Earth, just a month after a NASA satellite did the same. NASA orbital debris scientist Mark Matney and Phil Plait, author of the Bad Astronomy blog, discuss whether engineers on Earth have any say when--or where--objects fall.

Source: http://www.npr.org/2011/10/21/141591189/predicting-when-space-junk-will-come-home-to-earth?ft=1&f=1007

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