Fraggle Rocker
Staff member
As I understand it, there is an exact balance of particles and antiparticles in the universe (quarks, leptons, bosons, or whatever the architecture is now), so there was no "source." There was, and is, zero total mass and zero total energy.What you might get in the instance of the birth of a universe is a sudden increase of energy (from what source is a different question) . . . .
This categorizes the Big Bang as simply a spatially and temporally local reversal of entropy--an increase in organization of the "nothing" that was already there--which is allowed by the Second Law of Thermodynamics, with no limit on size.
Organization has been steadily attenuating since then, and is presumably approaching zero-organization/100%-entropy asymptotically. Eventually there will be zero-everything again. It might take infinite time to reach that state, but entropy is patient.