>>13663060>What if before big bang there was nothingWe don't know
Current theory is that it was a state of matter/energy without separation of the two, without fundamental forces, or maybe with all fundamental forces unified as one; very dense, possibly infinitely so; very hot, possibly infinitely so; very compact, possibly puntiform
But honestly, we don't know
>when our universe ends whats the probability of a big bang happening again and resetting everything?Depends on calculations re the shape of the universe, the rate of expansion (mostly wether it will slow down or accelerate) and the dark energy gradient of the universe; current measurements point to a "heat death" scenario, where the universe will evolve into a dark state of maximal entropy, at which point maybe quantum fluctuations could possibly generate a new Big Bang from nothing
But we're missing crucial pieces of the math, so once again, we don't know
