Question: Do you believe that there are other universes somewhere out there?

Sam Geen answered on 21 Jun 2013:

Maybe! It’s difficult to say. One idea is that our universe is inside a bigger multidimensional “multiverse”, where there are lots of universes floating around (this is called “brane theory”). But this is just an idea so far – no-one has been able to test it.

Another idea is that quantum mechanics makes new universes all the time, which is how quantum computers (what Rob makes, I think) are supposed to work – they use information from other universes to perform calculations!