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Exploring the Universe: Crash Course Big History #2

3,277 צפיות· 10/24/23
CrashCourse
CrashCourse
2,185 מנויים
2,185
ב Life

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...

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