So a recent study finds that our universe has an anti-universe twin moving backwards in time: https://www.thebrighterside.news/post/our-universe-has-an-anti-universe-twin-moving-backwards-in-time-study-finds/

Today we're talking about the baryon asymmetry problem, which addresses the observed imbalance between matter and antimatter in the universe, despite predictions that the Big Bang should have produced them in equal amounts.

https://en.wikipedia.org/wiki/Baryon_asymmetry

One widely accepted framework, the Sakharov conditions, proposes three criteria necessary for matter to dominate: baryon number violation, CP-symmetry violation, and interactions out of thermal equilibrium. Alternatively, a newer hypothesis suggests a CPT-symmetric universe, where the Big Bang served as a pivot point for our universe expanding forward in time with matter, and a mirror "anti-universe" expanding backward in time with antimatter. This mirror anti-universe model offers explanations for the existence of dark matter through superheavy neutrinos and challenges the need for the inflationary theory of cosmic expansion.

https://x.com/forallcurious/status/1953974934478246232

https://en.wikipedia.org/wiki/Antarctic_Impulsive_Transient_Antenna

#astronomy #antimatter #cosmos #universe #bigbang

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