Answer to Question #34778 in Astronomy | Astrophysics for Randy White Wolf
What, if anything, existed before the 'Big Bing' and what started the 'Big Bang'?
Events before the Big Bang have no observational consequences, one may as well cut them out of the theory, and say that time began at the Big Bang. Events before the Big Bang, are simply not defined, because there's no way one could measure what happened at them.
Both time and space are contained within the universe and came into existence only AFTER the Big Bang occurred. The cause of the universe must not include them, they are not available to us. It must come from outside our experience.
There is no time, there is no before in which the Big Bang could have occurred, there simply is no cause and effect.