Dear PF Forum, I'm just curious about these things. From what I read, the number of atoms in the universe is 1080 Hydrogen atoms. And neutrino is a billion times more. 1.2 x 1089 But what it said is actually the number of protons + neutrons, right? And about this. Is the number of protons and eclectrons in the universe balanced. If yes, why? Protons and neutrons, they both are created in Baryongenesis, what about electron? When were they created? Leptogenesis they say, but it's hipothetical, right?