A better way to view this is to visualize
the fabric of spacetime
as a piece of paper. Let's say you want to get from point A
at the top of the paper to point B at the bottom. What's the shortest way? Classical physics
says it's a straight line
, but what if instead you fold the paper so that the two points are right next to each other a few micron
s apart? That's the idea behind a wormhole, instead of going in a straight line you bend the fabric
of spacetime to bring the points much closer together.
In order to actually create a wormhole, you would have to have a region of spacetime with negative curvature. Experiments have actually been conducted which have created small scale wormholes by charging two large metal plates up, creating what is known as the Casimir effect. Of course, this is just a theoretical wormhole and is of little use, but it's a start...