Crash Course Pods: The Universe

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Ep. 3: The Dark Ages of the Cosmos

In this episode, the universe as we know it starts to come into focus. Dr. Katie Mack teaches John Green about the cosmic dark ages, the possibility of a multiverse, and the connection between the hot, dense early universe and today.

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  Ep. 11: How It All Ends

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  Ep. 10: The Future

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  Ep. 9: The Cosmos and Us

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  Ep. 8: Life In Our Universe

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  Ep. 7: What’s Keeping the Stars Apart

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  Ep. 6: The Story of Dark Matter

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  Ep. 5: Black Holes

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  Ep. 4: When The Stars Turned On

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  Ep. 2: Why We Can Exist

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  Ep. 1: The First Fraction of a Second

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  Trailer: The Universe with John Green and Dr. Katie Mack