Star Trek The Original Series, The Next Generation, Deep Space Nine, Voyager, Enterprise, are 5 science fiction television series set in the Star Trek universe created created by Gene Roddenberry. The core of Star Trek is its five television series: The Original Series, The Next Generation, Deep Space Nine, Voyager, and Enterprise.
The original Star Trek series features William Shatner as James T. Kirk Captain of the Starship Enterprise and followes its interstellar adventures. In the Next Generation The Enterprise is commanded by Captain Jean-Luc Picard (Patrick Stewart). Benjamin Sisko (Avery Brooks) is the Starfleet officer placed in charge of Deep Space Nine. Captain Janeway (Kate Mulgrew) is the Starfleet captain of the Intrepid-class USS Voyager
(Source: wikipedia.org)