Star Trek: Deep Space Nine is a science fiction television series set in the Star Trek universe.
The show is set in the Milky Way galaxy, in the years 2369 – 2375. Unlike the other Star Trek TV shows, it takes place on a space station instead of a starship, so as not to have two series with starships at the same time. This made continuing story arcs and the appearance of recurring characters much more feasible. The show is noted for its well-developed characters and its original, complex plots. The series depended on darker themes, less physical exploration of space, and an emphasis on many aspects of war.
DS9 premiered in 1993 and ran for seven seasons, ending in 1999. Rooted in Gene Roddenberry’s Star Trek universe, it was the first Trek spin-off created without direct involvement from Roddenberry, although he did give his blessing to the concept shortly before his death in 1991. The series was created by Rick Berman and Michael Piller, at the request of Brandon Tartikoff, and produced by Paramount Television. Key writers, in addition to Berman and Piller, included showrunner Ira Steven Behr, Robert Hewitt Wolfe, Ronald D. Moore, Peter Allan Fields, Bradley Thompson, David Weddle, Hans Beimler, and René Echevarria.
Star Trek: Enterprise is a science fiction TV series and a prequel to the original Star Trek set 100 years before. The series premiered September 26, 2001 on the UPN television network with the final episode airing on May 13, 2005.
The series takes place in the 22nd century aboard Earth’s first warp 5 capable starship Enterprise NX-01 designed for long-range exploration of the galaxy and captained by Jonathan Archer. The NX designation indicates that this Enterprise is an experimental prototype.