Wormhole

Star Trek

* Objects with the features similar to wormholes were featured in episodes of Star Trek: The Original Series, although the word wormhole was not used. The gateway featured in the episode The City on the Edge of Forever, for example, was a gateway through time that operates somewhat similar to a wormhole.

* Early in the storyline of Star Trek: The Motion Picture, an antimatter imbalance in the refitted Enterprise starship's warp drive power systems creates an unstable ship-generated wormhole directly ahead of the vessel, threatening to rip the starship apart partially through its increasingly severe time dilation effects, until Commander Pavel Chekov fires a photon torpedo to blast apart a sizable asteroid that was pulled in with the starship (and directly ahead of it), destabilizing the wormhole effect and throwing the Enterprise clear as it slowed to sub-light velocities. Near the end of the film, Willard Decker recalls that "Voyager 6" (aka V'ger) disappeared into what they used to call a "black hole". At one time, black holes in science fiction were often incorrectly endowed with the traits of wormholes. This has for the most part disappeared as a black hole isn't really a hole in space but a dense mass and the visible vortex effect often associated with black holes is merely the accretion disk of visible matter being drawn toward it. Decker's line is most likely to inform that it was probably a wormhole that Voyager 6 entered.

* The setting of the television series Star Trek: Deep Space Nine is a space station, Deep Space Nine, located near the Bajoran wormhole. This wormhole is unique in the Star Trek universe because of its stability. In an earlier episode of Star Trek: The Next Generation it was established that wormholes are generally unstable on one or both ends - either the end(s) move erratically or they do not open reliably.[1] The Bajoran Wormhole is stationary on both ends and opens consistently. It provides passage to the distant Gamma Quadrant, opening a gate to starships that extends far beyond the reach normally attainable. It is also the source of a severe threat to the Alpha Quadrant from an empire called the Dominion.

* In the 2009 Star Trek film, red matter is used to create artificial black holes. A large one acts a conduit between spacetime and sends Spock and Nero back in time.