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naveen9912/10/20242 repliesview on HN

It doesn’t really help with the origin. If the universe is infinite, any possibility will happen in some part of the universe but not necessarily in the part accessible / visible to us. So our part of the universe could have antimatter or a different part could…


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marcyb5st12/10/2024

While this might be possible, we would see annihilation events at the boundaries of matter/anti-matter zones.

Additionally, statistically speaking, such a degree of order is highly unlikely since it would have much lower entropy compared to an homogeneous mix.

It is much more likely that there is some unknown physical process that broke the symmetry between matter and anti-matter and so our universe is matter rich and anti-matter poor.

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K0balt12/10/2024

So, are you saying that it might be possible that there are antigalaxies somewhere out there beyond the visible horizon in spacetime ? I mean, of course “possible” like flying elephants possible, but maybe theoretically predictable?

Like maybe the matter went this way, and the antimatter went that way in spacetime? Or maybe all the antimatter went before the Big Bang and the matter went after?

I mean that’s wild but it would fix the symmetry problem!

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