| 1 | Ep. 1: The First Fraction of a Second 2024-04-24 |
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| 2 | Trailer: The Universe with John Green and Dr. Katie Mack 2024-04-10 |
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Crash Course Pods: The Universe
Dr. Katie Mack, a theoretical astrophysicist, walks #1 New York Times bestselling author John Green through the history of the entire universe - including the parts that haven’t been written yet.
