Is Space and Time Curved?

If you can tilt a bunch of these cones just the right way, then you can make this path that loops on around itself and comes back to the same point where it originated. It's like shooting a light beam and having hit you in the back of the head,. Almost like a worm hole, kind of in time, almost like a wormhole. This is like a structure in space. It'slike a loop in space time, right?