Well, if theirs a hole in space and there is nothing there, that must be God for sure. All evidence on earth points to the fact that he has done nothing, and is nothing. All kidding aside......
How can space and time exist in nothingness. Imagine if there was no universe. How could time exist without anything moving? There is dark matter on the outer edges of the universe, but they arn't sure what that is exactly, either. God could be the dark matter itself that surrounds the universe that always was or that he converted from energy to matter?
My last theory on this. Maybe it's a portal for travel to other areas in space and time. A hole in the fabric of the space time continuim. A means of travel perhaps to another dimension or place in time for spirit creatures to move about without traveling great distances.
I really don't know but that sure sounds mysterious!