Source: wikibot/photon-epoch
= Photon epoch
{wiki=Photon_epoch}
The Photon Epoch refers to a specific period in the early universe, approximately from 10 seconds to about 380,000 years after the Big Bang. During this epoch, the universe was filled with a hot, dense plasma composed mostly of photons, electrons, protons, and other particles. The temperatures were extremely high, and matter existed in a highly energetic state.