So take a piece of paper, and mark two points on it on opposite ends of the sheet. Normally, the shortest path from one point to the other is a straight line across the sheet. But, suppose we could fold the paper in half, such that the holes are lined up on top of each other. Then the shortest path would be through the paper. A wormhole is a distortion in space-time that connects one point to another point, much like how the folded paper brings two points that are normally apart, together.
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