
How the Universe Works Season 1 Episode 3
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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Serie: How the Universe Works
Guest Star: Hakeem Oluseyi, James S. Bullock, Lawrence Krauss, Michelle Thaller, Michio Kaku, Mike Rowe, Moogega Cooper, Phil Plait, Richard Lintern