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这是 Youtop 运营的独立目录页面，并非由 CrashCourse 或 YouTube 运营、赞助或认可。 提交更正. 你是这位创作者吗？认领此页面
CrashCourse · 发布于 2014年9月24日
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. For more information, visit http://www.bighistoryproject.com Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids
