Science can't be known to be true because of solipsism. Empiricists and scientists can say "yes, but let's assume reality exists" and that is fine, but the best argument against solipsism I've ever heard was by Russell who essentially said that it is boring.

Fine. But don't go around thinking that the big bang creating the universe is true in an absolute sense. You have no proof that there even is a universe, and realistically, even if I assume that reality exists, I'm still left with the simulation argument, which makes it even more likely that we're just sims in a complex economics experiment.

edit: Now excuse me while I go on a nice bike ride :)