How the Universe Works: 2x6
Comets - Frozen Wanderers
As time machines from the early universe, comets could hold the key to unlock the secrets of the cosmos, and may even be the origin of life itself. In this episode, we learn that comets are even more mysterious and fascinating than we had ever imagined.
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