Theoretically space is infinite, as it is the ultimate container. So how does it expand? For example if you keep adding objects to a room the room isn’t gonna expand, you’re gonna run out of space. So how does space expand if the cause of it is apparently dark matter being created?
No, finite doesn’t necessarily mean it has a border. The surface of the earth has finite area, but one can theoretically travel along the surface of the earth forver in any one direction without ever hitting any border. (You’d of course eventually return to where you started, but not hit a border.) The universe may well be the same way. A “hypersphere” if you will. That is, maybe theoretically if you traveled in “a straight line” forever, you’d eventually find yourself where you started rather than ever hitting an edge or boundary or border.
Ah, makes sense