This list describes some of the more significant settings for Star Trek films or story arcs over multiple television episodes.
The Badlands comprise an area of space that appears (or is referenced) in episodes of Star Trek: Deep Space Nine and Star Trek: Voyager. An example of show featuring special effect shots of the Badlands is For the Cause (Star Trek: Deep Space Nine) (Broadcast May 6, 1996 on television)
Located in Star Trek's Alpha Quadrant, the Badlands are characterized by constant plasma storms and funnel clouds. The Maquis use it in several episodes as a meeting or hiding place because of its treacherous navigation. It is also known to have a few planets hidden within the clouds and nebulae.
In the fictional Star Trek universe, the Bajoran wormhole is a spatial anomaly located within 160,000,000 kilometres (99,000,000 mi) (DS9 S1Ep2: "Emissary (Part 2)") of the planet Bajor. It appears as an aperture of swirling golden-white light surrounded by blue clouds, which appears whenever a vessel approaches or exits from it and disappears again afterwards. The wormhole can only be traversed by ships traveling at impulse (sub-light speed) velocities.
The Bajoran wormhole is discovered in the first episode of Star Trek: Deep Space Nine. It is found to connect the Bajor-B'Hava'el system in the Alpha Quadrant to the Idran system in the Gamma Quadrant, which are seventy thousand light-years apart. Due to the strategic importance of such a phenomenon, the Deep Space Nine space station is moved out of Bajor's orbit and repositioned 15 kilometres (9.3 mi) from the wormhole, where it acts as a gateway.