Another speed bump on the cosmic highway: polaris93

polaris93

Another speed bump on the cosmic highway

Feb 10, 2011 15:54

YouTube - Last Days On Earth 6/12 History Channel

(http://www.youtube.com/watch?v=oYNsBVJ2Hv0)

apocalypse, geology, mass extinctions, danger, science, asteroids, threats, impacts, astronomy, doomsday

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