Parallel Universes

Does The Multiverse Provide A Theory of Everything?
Having rejected the idea for years, some scientists are now saying "yes" to the theory of infinite parallel worlds.
Also known as the Multiverse Theory, the idea is mind boggling when taken to its extreme. It states that there are an infinite number of universes making up all of physical reality. Our world is one of many. While some worlds will be virtually identical to ours, others will be unrecognizable – containing space, time and bizarre forms of exotic matter. In effect, the Multiverse caters for every possible outcome of every single event.
Big Bounce
Far from being the moment of creation that is widely accepted today, the Big Bang may have occurred when two of these bubble universes collided. Our universe could have formed out of the quantum foam of two parent universes. This turns the conventional Big Bang Theory on its head, suggesting that space and time existed well before our universe was ever born.
Tying Up With String Theory
Since Einstein gave us his Theory of General Relativity, and modern day physicists gave us Quantum Mechanics with its String Theory, Hyperspace and Dark Matter – all that remains is to unite these ideas in a Theory of Everything. But how do they fit together? M Theory (in which the M is speculated to mean Master, Mother, Membrane or Matrix among other things) may be the key. Although incomplete, it ties together the five big superstring theories and provides the concept of membranes for an eleventh dimension.