science

19507 readers

896 users here now

A community to post scientific articles, news, and civil discussion.

rule #1: be kind

founded 2 years ago

MODERATORS

358

submitted 2 years ago by boem@lemmy.world to c/science@lemmy.world

66 comments fedilink hide all child comments

(page 2) 21 comments

sorted by: hot top controversial new old

[–] hperrin@lemmy.world 1 points 2 years ago* (last edited 2 years ago) (4 children)

Why would anyone think it would fall up?

[–] match@pawb.social 3 points 2 years ago

Because things exist

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

[–] foyrkopp@lemmy.world 2 points 2 years 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.

load more comments (1 replies)