The Big Bang theory is an attempt to describe the creation and evolution of the universe. The theory appears to match observations, and the theoretical physics appear to hold back through time to within a tiny fraction of a second after the creation of the Big Bang. Beyond that the theory cannot explain how the Big Bang singularity came into existence. See The Big Bang Theory Indeed, it is really pointless to attempt to go back beyond the Big Bang, it is meaningless to ask what came 'before' because there is no 'before'. Time itself came into existence with the Big Bang.