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In this episode, John and Katie take a break from talking through the universe's timeline to focus on a mystery of our cosmos: black holes.
Head to https://policygenius.com/crashcourse to get your free life insurance quotes and see how much you could save.
This show is a production of Complexly. If you want to help keep Crash Course free for everyone, forever, you can join our community on Patreon at http://www.patreon.com/crashcourse
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290290 ratings
In this episode, John and Katie take a break from talking through the universe's timeline to focus on a mystery of our cosmos: black holes.
Head to https://policygenius.com/crashcourse to get your free life insurance quotes and see how much you could save.
This show is a production of Complexly. If you want to help keep Crash Course free for everyone, forever, you can join our community on Patreon at http://www.patreon.com/crashcourse
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