{"version":1,"type":"rich","provider_name":"Libsyn","provider_url":"https:\/\/www.libsyn.com","height":90,"width":600,"title":"Ep. 776: The Matter - Antimatter Dichotomy","description":"Astronomy Cast Ep. 776: The Matter - Antimatter Dichotomy By Fraser Cain &amp;amp; Dr. Pamela Gay 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\u2019t have to be that way! Explaining this mystery has been one of the great mysteries in astronomy, and today we\u2019ll see if there\u2019s 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! &amp;nbsp; This show is supported through people like you on Patreon.com\/AstronomyCast&amp;nbsp; 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, S\u00e9rgio Sancevero ","author_name":"Astronomy Cast","author_url":"http:\/\/www.astronomycast.com","html":"<iframe title=\"Libsyn Player\" style=\"border: none\" src=\"\/\/html5-player.libsyn.com\/embed\/episode\/id\/39540130\/height\/90\/theme\/custom\/thumbnail\/yes\/direction\/forward\/render-playlist\/no\/custom-color\/88AA3C\/\" height=\"90\" width=\"600\" scrolling=\"no\"  allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen><\/iframe>","thumbnail_url":"https:\/\/assets.libsyn.com\/secure\/content\/196917475"}