Exploring the Universe: Crash Course Big History #2

In which John Green, Hank Green, and Emily Graslie teach you about what happened in the Universe after the big bang.

They’ll teach you about cosmic background radiation, how a bunch of hydrogen and helium turned into stars, formed galaxies, created heavy elements, and eventually created planets.

Published by amongthefray

News with a historical perspective. Fighting against misinformation, hate, and revisionist history.

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