I know that many people believe that the universe was created by a big bang and that its still expanding and many people also think that God created it. I think that God caused the big bang because the Earth was once a formless void. The  proof is in Genesis 1 verse 2 “Now the Earth was formless and empty, darkness was over the surface of the deep, and the spirit of God was hovering over the waters.” That is how i think the universe was created.