Or the big bang might be eternal.

The singularity could be an eternal white hole endlessly spitting out the purest most fundamental energy in a disc.

That ring field of energy expands slowly outward along the universal disc traveling through space and time, coalescing and forming into galaxies, suns and planets.

That ring continues outward to the edge and then many of those suns collapse into black holes devouring all that matter and energy, compressing it inward until it is torn apart at it's most fundamental level and returned to it's pure formless state. Then, that energy is funneled back through a multitude of wormholes right back to the center where it is spit again to make a new ring.

The moment of it's creation serving as a vail in space time keeping it from seeing the new rings formed behind it.

The Ouroboros; the serpent eating it's own tail.

Of course if that is what black holes are doing, then it kind of ends the dream of wormholes being used for travel anywhere, except to the singularity; the forge of god.