I would provide a long, drawn-out explanation, but suffice to say, if you are concerned with the formation of space and time as we know it, there is no doubt that it originated as is described by the
Big Bang Theory.
The theory predicted a
cosmic microwave background radiation spectrum (CMB) which was
identical to the experimental results from the
COBE project. In fact, the theory was so accurate that on the graph plotting the experimental results superimposed on the theoretically predicted CMB curve, the errors were so insignificant that it was impossible to distinguish the experimentally derived curved from the theoretical curve. The theory predicted our measurement
exactly.