I have never understood why Christians fight against this sort of thing as if it disproves the existance of God. When a magician does a trick and you discover HOW he did the trick does that mean the magician does not exist?

Could the Big Bang perhaps be the method God used to Create everything? Why not?

If Aliens do exist would this disprove the existance of God when there is no mention either way in the bible? God didn't mention atoms or coffee cups... do these somehow disprove the existance of God? No.

As for life before homosapiens. Didn't God tell Adam and Eve to REplenish the Earth?