A '''wormhole''', in [[science fiction]], is a passage from one location in three-dimensional space to another. It is based on the concept that space has more than three dimensions, and that 3D space can be "folded" within 4D space much as a 2D piece of cloth can be folded within 3D space. | A '''wormhole''', in [[science fiction]], is a passage from one location in three-dimensional space to another. It is based on the concept that space has more than three dimensions, and that 3D space can be "folded" within 4D space much as a 2D piece of cloth can be folded within 3D space. |