Claim your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/sabinehossenfelder. Start your free trial TODAY so you can watch "Secrets of the Universe" about solutions to the problem of environmental pollution, and the rest of MagellanTV’s science collection: https://www.magellantv.com/series/secrets-of-the-universe Why is there more matter in the universe than anti-matter? If they were produced in equal amounts in the universe, they should have annihilated and just left radiation behind. Does this mean Dirac's theory of anti-matter is wrong? An if anti-particles are mirror particles of our normal matter could there be "anti-stars" in our galaxy, stars made of anti-matter? That's what we talk about today. The anti-matter panel discussion I mention in the beginning is here https://www.youtube.com/watch?v=-2ngmVwXteE The anti-star paper is here: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.103.083016 0:00 Intro 0:30 Sponsor Message 1:38 Is anti-matter a problem? 3:25 What did Dirac say? 6:11 The matter anti-matter asymmetry 10:05 Anti-stars?!