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How the Universe Works: 2x7
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.
2 - 1Volcanoes - The Furnaces of Life Jul. 11, 2012
2 - 2Megastorms - The Winds of Creation Jul. 18, 2012
2 - 3Exoplanets - Planets from Hell Jul. 25, 2012
2 - 4Megaflares - Cosmic Firestorms Aug. 01, 2012
2 - 5Extreme Orbits - Clockwork and Creation Aug. 08, 2012
2 - 6Comets - Frozen Wanderers Aug. 15, 2012
2 - 7Asteroids - Worlds That Never Were Aug. 22, 2012
2 - 8Birth of the Earth Aug. 29, 2012