TV-PG
83%How the Universe Works
Apr 25, 2010 42 min avg S1 E3
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Description
tvDocumentary
A users' guide to the cosmos, from the Big Bang to galaxies, stars, planets and moons: where did it all come from and how does it all fit together? A primer for anyone who has ever looked up at the night sky and wondered.
Episode 3Galaxies
The evolution of galaxies, from clouds of cold gas floating in space 13 billion years ago, to the vast gravitationally bound systems of today.
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