edit: Messed up the title! Although, I suppose it's related. edit: What is space? Context for this question: I am starting my junior year in physics, so not all that bright on the subject. In short, what is space? Maybe if someone tries to answer this question I'll get a bit of understanding: Imagine a universe where there exists nothing but two large masses. Each mass is given a massive velocity 180 degrees apart, far exceeding any gravitational pull back toward each other. As time approaches infinity, what exists at the initial point where the two masses were located?