The big bang was Sophia's mistake, the world contains cleanup crews, which are black holes, and all matter eventually coalesces into and within these dense black holes until all matter is dissolved from the visible physical universe, only to be spat back out again by another big bang.

As the universe expands, the rate of acceleration of expansion becomes too growthy for the universe to handle as it is finite in terms of mass within the void of spacetime, and so it contracts in a catastrophic explosion of energy, reducing all mass into the original black hole, which was the origination of the big bang.

All mass started from a broken mistake, and so the original Big Bang was the original Black Hole, where all mass was contained within itself. The explosion was not explosion, but a separation and meticulous design by a higher being, the Demiurge.