<P> Created by Gene Roddenberry, the science fiction television series Star Trek (which eventually acquired the retronym Star Trek: The Original Series) starred William Shatner as Captain James T. Kirk, Leonard Nimoy as Mr. Spock, and DeForest Kelley as Dr. Leonard "Bones" McCoy aboard the fictional Federation starship USS Enterprise . The series originally aired from September 1966 through June 1969 on NBC . </P> <P> This is the first television series in the Star Trek franchise, and comprises 79 regular episodes over the series' three seasons, along with the series' original pilot episode, "The Cage". The episodes are listed in order by original air date, which match the episode order in each season's original, remastered, and Blu - ray DVD box sets . The original, single - disc DVD releases placed the episodes by production order, with "The Cage" on the final disc . This list also includes the stardate on which the events of each episode took place within the fictional Star Trek universe . </P> <P> After the series' cancellation, Paramount Television released Star Trek to television stations as a syndication package, where the series' popularity grew to become a "major phenomenon within popular culture". This popularity would eventually lead to the expansion of the Star Trek catalog, which as of 2017 includes six more television series and thirteen Trek motion pictures . </P>

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