A look at the cosmic shooting gallery of the universe; what happens during comet, asteroid and planetary collisions; the effects of mass extinction impacts; what happens when stars collide, and when entire galaxies merge together.
Tags
History Channel, Louis C. Tarantion, Douglas J. Cohen, the universe, universe, documentary, free, watch, online, movie, film, video, top, doc, documentation, cosmic collisions, cosmic, collision, asteroid, galaxy
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