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How the Universe Works Season 2 Episode 7

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.

Aug. 22, 2012

2 - 8
Birth of the EarthAug. 29, 2012
2 - 7
Asteroids - Worlds That Never WereAug. 22, 2012
2 - 6
Comets - Frozen WanderersAug. 15, 2012
2 - 5
Extreme Orbits - Clockwork and CreationAug. 08, 2012
2 - 4
Megaflares - Cosmic FirestormsAug. 01, 2012
2 - 3
Exoplanets - Planets from HellJul. 25, 2012
2 - 2
Megastorms - The Winds of CreationJul. 18, 2012
2 - 1
Volcanoes - The Furnaces of LifeJul. 11, 2012