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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10月2日
In which John Green, Hank Green, and Emily Graslie teach you about our Sun and the formation of the planets. We're going to focus on the formation and development of the Earth because that's where people live. You'll learn about the Solar nebula, the birth of the sun, the formation of planets, and how the Earth and the rest of the solar system developed over the last 4.567 billion years. 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
