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2024-11-11

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submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 1 points 1 year ago* (last edited 1 year ago) (4 children)

Why would anyone think it would fall up?

[–] [email protected] 3 points 1 year ago

Because things exist

(the antigravity hypothesis was an attempt to explain why matter and antimatter haven't annihilated each other)

[–] [email protected] 2 points 1 year ago

Because one common assumption was that the universe might contain as much antimatter as matter.

Which begs the question: Where did it go? We would notice a huge amount of annihilation reactions in the solar system.

"Antimatter falls up" (is gravitationally repelled instead of attracted by normal matter) was an easy hypothesis to explain that.

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