hi. im an undergraduate physicist and don't have that much exposure to cosmology but i was watching a BBC Horizon episode on M Theory and that the Big Bang was believed to be the collision of two parallel universes in the 11th dimension and that the combining of the p-brane ripples formed matter or something along the lines of that. Anyway in this scenario, there were all these parallel universes contained inside a so called "multiverse". I was wondering then, if we got to the edge of our universe and looked out, what would we see. i.e. if all the universes are bubbles in the multiverse, what is between teh bubbles in the multiverse? Also, if we get to the edge of the multiverse and look out what would we see? Surely the answer can't be nothing? because even nothing is something? cheers.