who knows more about the big bang?

string theory says that big bang is the result of collision between twoparallel universes(branes) that occured 15 billion years ago.It also says thatit could hapen again.However it does not explain much about the conditions that existed during the big bang.Scientists can trace the events during big bang to a resolution of milli seconds .But they all vanish when u ask them what was there before the big bang.

i don't mean to correct you but you forgot to mention 'theory' after 'big bang', so to speak "Big Bang Theory"..?

i feel its god's way of keeping the humans away from knowing the source of HIS own existance. what i mean is , if some one created the universe , confusing the inhabitants of the universe is the best best way of hiding his own existance.