I don’t have Death from the Skies! in front of me but needed to check out something I wondered about and find some links for when I’m completely done correcting this bilge and have a chance to … So, after the black hole era, the dark era; positrons, electrons, neutrinos and photons scattered around, the positrons and electrons crashing into each other every few octillion years and mutually annihilating, right? So I’m assuming eventually just … neutrinos, if there are about as many + as – and they cancel each other out; what happens to photons?  Anyway, all this needs to be looked into.  Deep, deep time.

The Dark Era

Mysteries of Deep Space Timeline

BBC – Final Frontier