How the Universe Works (2010)
S03E06 Weapons of Mass Extinction
Episode Overview
Asteroids crash, planets smash into one another, black holes unleash deadly beams, volcanoes explode, and ice covers the Earth. These are the universe's instruments of annihilation. They've occurred in the past, eradicating entire species, and they will surely happen again. Will we be the next victims?
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S03
