As far as the creator of a creator, that's a whole other discussion. One line of thinking is that there are infinite number of "creators" and that there has never been a state of "nothingness". It's a paradox, sure, but so is the existence of infinite even though we can conclude it is real through basic geometry. All that is to say that this article is merely focused on what we are doing right now in this universe.

The "space" is not physical. When you dream, does that world require actual space?