And you just proved your ignorance. Anyone who says the phrase "just a theory" or its equivalent, does not know what a scientific theory is.<quoted text>Science thinks the Big Bang created everything.....that's absurd! In human terms it makes sense. In the scope of understanding infinite space...its a theory, nothing more.
By the way what evidence do you have that space is infinite? That is not a mistake that scientists will make. Without evidence they will not claim that space is infinite or bounded. In fact that is one question that they are still studying.