S1·E2 – Exploring the Universe

2014-09-24 • 14 min

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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.

Cast

Emily Graslie

Self - Host

Hank Green

Self - Host

John Green

Self - Host