The Problem With Antimatter

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In discussions about antimatter, the first consideration is usually why did all the antimatter from the Big Bang disappear. If that's true, why is it that antimatter pops up so often in our matter-only universe during radioactive decay? The scientific challenge is baryogenesis: what created the asymmetry between baryons and anti-baryons? Maybe there is a compensating asymmetry in the neutrino background that gives us more anti-neutrinos than neutrinos,. or maybe not, we just don't know.

Welcome to the May 2023 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreons, whittle them down to a more manageable number — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy!

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