20 'sibling' asteroids on a similar path to the huge one that hit Russia recently > http://www.youtube.com/watch?v=iWgorhVVbRs&feature=youtu.be …
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20 'sibling' asteroids on a similar path to the huge one that hit Russia recently > http://www.youtube.com/watch?v=iWgorhVVbRs&feature=youtu.be …