Asteroids - Worlds That Never Were

August 22, 2012
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How the Universe Works - S2 - E7

Asteroids - Worlds That Never Were

Asteroids wiped out the dinosaurs and may be back for us but they also built the Earth and may have brought life to its barren surface. Asteroids will shape our future as much as our past and scientists are striving to unlock their secrets.

How the Universe Works: Season 2 - 8 Episode s