- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Class M world of the Delta Quadrant whose humanoid pre-warp civilization had city structures, provinces like Kalto, waterways and aqueducts, and a continental transport system in AD 2371. While in an alternate time loop the U.S.S. Voyager caused an accidental detonation of a polaric ion power grid and destroyed all life there, then helped restore the correct timeline using floating subspace fractures.