Originally Posted by Atomic Rooster
There is no scientific proof behind the big bang. It's just conjecture.
Scientists can only theorize that a big explosion happened when nothing combined with more nothing to create an explosion. Since when does energy and mass suddenly appear out of nothing and explode?
It doesn't, and that is not what the Big Bang says happened at all. In fact, the Big Bang theory goes back to one billionth of a second after the Big Bang (which wasn't an explosion, but a rapid expansion of space-time, matter wasn't just flung around like in an explosion, it was carried on the fabric of space-time, like currents rising on bread in an oven).
What was there before the bang? No one knows, and scientists readily admit that. However, there are viable explanations out there such as massive singularities, or the answer is locked away within Quantum Theory. Scientific laws state that matter cannot be created or destroyed, so there was energy before the Bang, and the heat converted that energy into matter.
And as for their not being any proof for the Big Bang...naughty naughty.
This is a nice little video explaining some of the evidence in simple terms.
And after this event scientists have an elegant explanation of how such a young universe evolved into our current universe. I could explain it to you guys in very simple terms if you like.
The bottom line is, we know the Big Bang happened, just not why or what was there before. You could invoke God if you wish, however adding God to the equation merely complicates the answer because it explains nothing. It's a fancy way of saying "I don't know".