[Someone]

I do not understand:

- I think all photons fall down in a gravitational field.

- you claim photons are their own antiparticle.

Hence, antiphotons fall down in a gravitational field. How then would antimatter fall upwards ~because~ it is the antiparticle of matter? Am I wrong in 'knowing' that all light bends the same under gravity?

[Dn_Ab]

Best as I can tell I don't think we disagree. You are saying that antimatter should react the same way with respect to gravity as matter does right? Then I agree. I do not think antimatter will be found to fall up or be repelled.

[Someone]

You are right. I must have mixed up two replies.