So it is very easy to understand wormholes. It is basically a shortcut which connects two points of space-time. First, we will explain things in two dimensions so that it is easy for you to understand. Look at this paper.
There are two points, A and B, on this paper. If you want to go from point A to point B using the shortest route, which route can it be? The straight line that connects A and B. There can be no shorter route in two dimensions except the straight line connecting both points. But if this two-dimensional mesh is bent into three dimensions, you will see new paths emerge.
We have bent A and B in such a way that if you want to choose the shortest path to go from A to B, then this distance of millimeters between A and B can be used directly. If we make a path here between these two, by inserting a pen, then, a shortcut has been found to go from A to B, which is much, much shorter, as compared to this path.
