Space folding
Space folding is a fictional method of instant space travel whereby the space folds so that the start and end points of the trip coincide/touch, and the travel takes no time.

In the "Dune" franchise created by Frank Herbert, space folding is depicted as instantaneous interstellar travel effected by mutated Guild Navigators under the influence of the drug melange. Kevin R. Grazier analyzes the concepts of folding space and faster-than-light travel in the essay "Cosmic Origami" in "The Science of Dune" (2008).

In "A Wrinkle in Time" (1962) by Madeleine L'Engle, "tesseracts" allow for travel through space and time, explained as follows: 
In the "Star Trek" universe, known for its warp drive technology, folding space is depicted as an alternate, instantaneous form of travel effected in different ways by different civilizations.

The concept of "space fold" used in the Japanese "Macross" franchise is actually hyperspace travel, which is carried out by first swapping the location of the spacecraft with Super Dimension space or subspace ("fold in"), and then swapping the Super Dimension space with the space at the destination ("fold out").
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