In this paper we explain the behavior of the entire universe from the smallest to the largest scales. We found the only tachyonic string theory (other string theories all are guesses), find an equation that changed the universe: F-bar = -mc²/R, establish the expansion theory of the universe without dark matter and dark energy, and prove that the principle of equivalence is nonexistent. We demonstrate that gravity is action-at-a-distance and that a gravitational wave is unobservable.We suggest a new universe model.