[troutman]

Originally Posted by Fuzz

If only the Universe was paper. I know the theory, but how do you fold space? Maybe one day. I don't think I'll live to see it.

https://wiki.physics.udel.edu/AAP/Folding_space

Could the space of our universe fold over like that so that points that are far apart on the paper touch? One cannot rule that out. But even if such a thing could happen, there is the question of how to take the "short cut". It would require what is called a "Minkowski wormhole" (a kind of bridge in space) to connect the two points A and B. The laws of gravity, as written down by Einstein, allow Minkowski wormholes to exist, but ONLY if there exists some kind of matter whose energy and momentum is unlike that of any kind of matter ever seen and extremely unlikely to exist in the real world. For this reason, physicists think that travel great distances by "folding space" is highly unlikely to be possible.