Question TO: Physics Forums – March 17, 2015 Various sources I have read talk about the big bang origin as a point singularity. Here is one example: [Quoted from The Beginning of Time, a lecture by Stephen Hawking (1996). At this time, the Big Bang, all the matter in the universe, would have been on top of itself. The density would have been infinite. It would have been what is called, a singularity. . . . Therefore, to understand the very high-density stage, when the universe was very small, one needs a quantum theory of gravity, which will combine General Relativity with the Uncertainty Principle.] Since the currently most commonly accepted cosmological model is spacially flat and isotropic, it must also be infinite and have infinite mass-energy. I cannot understand how the point singularity at time zero with zero volume and infinite mass-energy can in an infinitesimally short time become an infinite space, with its infinite mass-energy uniformly filling all of this infinite space. Can anyone explain this to me? It seems to me to be geometrically more logical space is, and always has been infinite since the big bang. Then the singularity also occupies at time zero all of infinite space, and at every point of this infinite space there is a finite mass-energy with an infinite mass-energy density. What do you think of this alternative?