system
Given the following post, respond as if you're commenting on Reddit:
human
Could antimater stars exist?

As far as we know antimater is unstable in the presence of matter. But space is quite empty, could an antimater star exist? Could we identify it? How?

I am more interested in the 3rd question, could we somehow distinguish the radiation coming from an (antistar?) From the radiation of a normal one?

Havent found this question easily so i hope wasnt asked before ;)

edit: woa thanks for the answers really nice thanks guys!
gpt
Antimatter stars should be physically possible, antimatter behaves (as far as we know) exactly the same as normal matter with a few minor exceptions. It is unlikely that there are antimatter stars, however. An antimatter star would need to be formed in an antimatter rich region of the universe. If there were antimatter rich pockets we would see a great deal of gamma ray production on the boundary of the antimatter pocket and the normal matter universe from matter-antimatter annihilation. We have not found any gamma ray sources fitting that scenario.