In the infinite starting was the vacuum vigor (a part state of vigor and matter, even if the matter is virtual). The vacuum vigor resided in space and time (or space-time, post relativity theory). Now why 'in the infinite beginning'? It eliminates the awkward, nagging and very annoying philosophical question of 'what came before that?' Its neigh near impossible to avoid request that because one just can't come to terms with a finite starting to everything. It's inevitable in a tasteless sense sort of way that no matter how far back you go, something came before that.
From the vacuum vigor (which again is a part phenomenon often termed vacuum or part fluctuations, the part jitters or part foam), at least one macro universe arose. This is theoretically possible (see references at the end) although I strongly fancy it has an awful lot to do with the part mantra that 'if it's not forbidden, it's compulsory' - at least if you're willing to wait long enough. Of procedure maybe more than one universe arose from the vacuum energy. The more the merrier!
Once formed, a macro universe is inherently unstable and will have to either improve (under at least the affect of 'dark energy') or contract (under the affect of gravity).
