Most asteroid flybys pass millions of kilometers away from Earth, too distant to notice. But one upcoming encounter will be unlike anything seen before.
http://news.cnet.com/8301-11386_3-57563434-76/nasa-deems-earth-safe-from-massive-asteroid-strike-in-2036/?part=rss&tag=feed&subj=News-CuttingEdge Get up-to-the-minute ...
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