1

Observations of the universe make us think matter is much more common than antimatter, and I believe no "probably-antimatter planets" have been found.

But, if Pluto, for example, somehow were mainly antimatter, would that contradict any specific observation?

Is it simply a judgment based on whether we see high-energy photon emissions (signifying matter-antimatter annihilation) from the planet? If so, do we get enough data from Pluto to be confident?

(I'm just curious if Antimatter Pluto could be a believable science fiction movie and can't decide despite answers here and here.)

bobuhito
  • 1,016
  • Possible duplicates: https://physics.stackexchange.com/q/1165/ and links therein. – Qmechanic Jun 08 '21 at 06:11
  • The referenced questions do not answer mine...I made this specifically for Pluto to understand how well we understand our own solar system. So, I hope this question can be reopened. – bobuhito Jun 08 '21 at 06:20
  • Maybe you should ask why it can't (or if it can be) composed of anti-matter. –  Jun 08 '21 at 06:24
  • The accepted answer to the referenced question says "We're very confident that our local neighborhood is matter, not antimatter". That seems to be an answer to your question. – badjohn Jun 08 '21 at 06:55

0 Answers0