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Message: <blockquote data-quote="tomBitonti" data-source="post: 6687064" data-attributes="member: 13107">So many quotes ... I've left off the attribute of the above.I've always wondered ... if so much matter/antimatter combined, wouldn't that create a huge excess of energy?  Where is that 10^10 factor of energy?That is, particle/antiparticle annihilation doesn't destroy the energy of the particles.  Depending on the energy of the particles, very roughly speaking, either, a photon is produced, or a photon and some other particles are produced, or maybe just some new particles depending on the exact energy of the event.Or does the energy recycle back into particles, but, considering the whole cycle, inefficiently, leaving a growing excess of matter?But then, the fraction seems too high!  There would be so many creation/annihilation events in the early universe, one in 10 billion seems to to be too many.Or do the events only happen in some narrow transition region, say, when matter and light decoupled?  Or very very early, such that the relevant time where the asymmetry mattered was very short?Thx!TomB</blockquote>