Ep. 776: The Matter - Antimatter Dichotomy

Streamed live on Dec 22, 2025. Shortly after the big bang there were almost exactly the same amounts of matter and antimatter in the Universe, but there was just enough of a difference that we live in a matter-dominated Universe. But it didn’t have to be that way! Explaining this mystery has been one of the great mysteries in astronomy, and today we’ll see if there’s been any progress! Why is the Universe the way it is? Specifically, why is it made mostly of matter? This is the question we'll look at today! This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Andrew Poelstra, BogieNet, Brian Cagle, Burry Gowen, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Jeanette Wink, Michael Purcell, Sergey Manouilov, Siggi Kemmler, Sérgio Sancevero

You can listen to Ep. 776: The Matter - Antimatter Dichotomy online on Radio and Podcast. Open the player on this page to stream the available audio.

Ep. 776: The Matter - Antimatter Dichotomy is an episode from 365 Days of Astronomy - Weekly Edition.

This episode is 54:52 long.

This episode was published on Dec 29, 2025.

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