Star Trek: Deep Space Nine, frequently abbreviated as DS9, takes place during the last years of and immediately after the Next Generation (2369–2375). It debuted the week of January 3, 1993, and ran for seven seasons. Unlike the other Star Trek series, Deep Space Nine was set primarily on a space station of the same name rather than aboard a starship. The cast included:
Avery Brooks as Benjamin Sisko
René Auberjonois as Constable Odo
Nicole de Boer as Ezri Dax
Michael Dorn as Worf
Terry Farrell as Jadzia Dax
Cirroc Lofton as Jake Sisko
Colm Meaney as Miles O'Brien (reprising his role from the Next Generation)
Armin Shimerman as Quark
Alexander Siddig as Julian Bashir (Credited as Siddig El Fadil seasons 1–3)
Nana Visitor as Kira Nerys
The show begins after the conclusion of the brutal Cardassian occupation of the planet Bajor, introduced in The Next Generation. The liberated Bajoran people ask the United Federation of Planets to help run a space station near Bajor. After the Federation takes control of the station, the protagonists of the show discover a uniquely stable wormhole that provides immediate access to the distant Gamma Quadrant, making Bajor and the station a strategically important location.[65] The show chronicles the events of the station's crew, led by Commander Benjamin Sisko (Avery Brooks), and Major Kira Nerys (Nana Visitor).
Deep Space Nine stands apart from earlier Trek series for its lengthy serialized storytelling, character conflicts, and religious themes—all elements praised by critics and audiences, but which Roddenberry had forbidden as a producer of the original series and the Next Generation.[66]
DS9 Wiki