Season 1, Episode 2
Exploring the Universe
Air Date: 2014-09-24
Overview: 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.
Runtime: 14 minutes
0.0 / 5
