> Won't a proton/antiproton annihilation also create two photons? I expect it would make a lot more than just two photons. See: https://en.wikipedia.org/wiki/

> Won't a proton/antiproton annihilation also create two photons? I expect it would make a lot more than just two photons. See: https://en.wikipedia.org/wiki/Annihilation#Proton%E2%80%93antiproton_annihilation https://en.wikipedia.org/wiki/Annihilation#Proton%E2%80%93an... > If so, wouldn't that also work in reverse? It would have to be demonstrated.