4 ms·
Photons. Each annihilation event emitted a photon, and they are still around. IIRC, about 5e9 times as many photons are observed as there are baryons, and tha
by beeforpork 4y ago
Photons. Each annihilation event emitted a photon, and they are still around. IIRC, about 5e9 times as many photons are observed as there are baryons, and that seems to match up well with the calculated imbalance of the baryosynthesis.