Yeah, I agree that science can get a lot of things close to fact. But there's a difference between what science is proven, and what is theory.
In a way science is its own religion. Those who believe in big bang, evolution, etc.
Even though I believe in some form of evolution myself (a bit off topic).
I still have to say that mathematics are "proven" or concrete if you wish. Probably because their premise have no manifestation in this world.