Star Trek stories usually depict the adventures of humans and aliens who serve in Starfleet, the spaceborne humanitarian and peacekeeping armada of the United Federation of Planets. The protagonists are essentially altruists whose ideals are sometimes only imperfectly applied to the dilemmas presented in the series. The conflicts and political dimensions of Star Trek sometimes represent allegories for contemporary cultural realities: Star Trek: The Original Series addressed issues of the 1960s, just as later spin-offs have reflected issues of their respective decades. Issues depicted in the various series include war and peace, the value of personal loyalty, authoritarianism, imperialism, class warfare, economics, racism, religion, human rights, sexism and feminism, and the role of technology.
The bulk of the Star Trek mythos is based around its six television series: The Original Series, The Animated Series, The Next Generation, Deep Space Nine, Voyager, and Enterprise. In total 726 Star Trek episodes have been produced across the 30 seasons of the TV series. The show tells the tale of the crew of the starship Enterprise and its five-year mission "to boldly go where no man has gone before." The original 1966–1969 television series featured William Shatner as Captain James T. Kirk, Leonard Nimoy as Spock, DeForest Kelley as Dr. Leonard "Bones" McCoy, James Doohan as Montgomery "Scotty" Scott, Nichelle Nichols as Uhura, George Takei as Hikaru Sulu, and Walter Koenig as Pavel Chekov. During its original run, it was nominated several times for the Hugo Award for Best Dramatic Presentation and won twice: for the two-parter "The Menagerie" and the Harlan Ellison-written episode "The City on the Edge of Forever".
The bulk of the Star Trek mythos is based around its six television series: The Original Series, The Animated Series, The Next Generation, Deep Space Nine, Voyager, and Enterprise. In total 726 Star Trek episodes have been produced across the 30 seasons of the TV series. The show tells the tale of the crew of the starship Enterprise and its five-year mission "to boldly go where no man has gone before." The original 1966–1969 television series featured William Shatner as Captain James T. Kirk, Leonard Nimoy as Spock, DeForest Kelley as Dr. Leonard "Bones" McCoy, James Doohan as Montgomery "Scotty" Scott, Nichelle Nichols as Uhura, George Takei as Hikaru Sulu, and Walter Koenig as Pavel Chekov. During its original run, it was nominated several times for the Hugo Award for Best Dramatic Presentation and won twice: for the two-parter "The Menagerie" and the Harlan Ellison-written episode "The City on the Edge of Forever".