How do we know that there is more matter than antimatter? Isn’t it possible that some distant objects (maybe even entire galaxies) are made of antimatter?
In: 330
Two reasons:
1. Antimatter can be detected, and we don’t have any signs showing huge amount of antimatter
2. Occam razor: we can imagine that the universe is significantly dishomogenuos and that what we see locally is wildly different than what happens at the edge of the universe, but it seems unreasonable and it is more efficient to approach in a sort of “innocent until proven guilty” approach.
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