my science teacher is obsessed with the big bang (if it even happend) and he yaps about how chistianity or budism are beliefs, and have no evidence to support them. if a theory is a belief that has proof to back it up, i asked him what proof there was to support the big bang theory. he talked about the red shifts, and how the universe is expanding. what i dont understand is how can scientists say that the universe expands and shrinks and when it shrinks realy small then explodes in a big bang. HOW THE HECK DO YOU COME UP WITH AN IDEA THAT THERE WAS THIS BIG EXPLOSION THAT CREATES A UNIVERSE JUST BECAUSE COLOR IS CHANGING ON A SPECTRUM? but what realy annoys me is all of the videos about the "big bang" and how these wacked up scientist talk about the big bang like they KNOW for sure that it happend. this is more of a rant than a question, but i just want some input.