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

Ep. 4: When The Stars Turned On

27 days ago 59m 57s

"Is free will still in the equation?"In this episode, the universe begins to become visible to itself. Dr. Katie Mack teaches John Green about the moment the stars turned on, while John seeks to answer one question... do humans matter to the un

Ep. 3: The Dark Ages of the Cosmos

May 22nd, 2024 52m 11s

"The only thing that could have happened, happened" 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

Ep. 2: Why We Can Exist

May 8th, 2024 44m 23s

"That’s why we’re here. Something broke."Head to https://policygenius.com/crashcourse to get your free life insurance quotes and see how much you could save. In episode 2 of their journey through the history of the universe, Dr. Katie Mack and

Ep. 1: The First Fraction of a Second

Apr 24th, 2024 48m 37s

"Part of me was there?" Dr. Katie Mack teaches John Green about the beginning of the Universe - including that we are not just made of stardust; we are also made of Big Bang stuff, with pieces of us directly born in the vast, first cacophony.He

Trailer

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

Apr 10th, 2024 2m 13s

Join Dr. Katie Mack, a theoretical astrophysicist, and #1 New York Times bestselling author John Green as they walk through the history of the entire universe - including the parts that haven’t been written yet. The Universe debuts on April 24t