How the Universe Works Season 2 Episode 7
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.
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Serie: How the Universe Works
Guest Star: Hakeem Oluseyi, James S. Bullock, Lawrence Krauss, Michelle Thaller, Michio Kaku, Mike Rowe, Moogega Cooper, Phil Plait, Richard Lintern