In the fictional universe of Star Trek, the Prime Directive is a guiding principle of Starfleet that prohibits its members from interfering with the natural development of alien civilizations. Its stated aim is to protect unprepared civilizations from the danger of starship crews introducing advanced technology, knowledge, and values before they are ready. Since its introduction in the first season of the original Star Trek series, the directive has featured in many Star Trek episodes as part of a moral question over how best to establish diplomatic relations with new alien worlds.
Vulcans, sometimes referred to as Vulcanians, are a fictional extraterrestrial humanoid species in the Star Trek universe and media franchise. In the various Star Trek television series and films, they are noted for their attempt to live by logic and reason with as little interference from emotion as possible. Known for their pronounced eyebrows and pointed ears, they originate from the fictional planet Vulcan. In the Star Trek universe, they were the first extraterrestrial species to make contact with humans.
Zefram Cochrane is a fictional character in the Star Trek universe. Created by writer Gene L. Coon, the character first appeared in the 1967 Star Trek episode "Metamorphosis", in which he was played by Glenn Corbett. James Cromwell later played Cochrane in the 1996 feature film Star Trek: First Contact, the 2001 Star Trek: Enterprise pilot, "Broken Bow", and the 2022 Star Trek: Lower Decks Season 3 premiere episode, "Grounded". Footage of Cromwell from Star Trek: First Contact was used in the Enterprise episode "In a Mirror, Darkly Part I".
"Journey to Babel" is the tenth episode of the second season of the American science fiction television series Star Trek. Written by D. C. Fontana and directed by Joseph Pevney, it was first broadcast on November 17, 1967.
Montgomery "Scotty" Scott is a fictional character in the science fiction franchise Star Trek. First portrayed by James Doohan in the original Star Trek series, Scotty also appears in the animated Star Trek series, 10 Star Trek films, the Star Trek: The Next Generation episode "Relics", and in numerous books, comics, and video games.
This article discusses the fictional timeline of the Star Trek franchise. The franchise is primarily set in the future, ranging from the mid-22nd century to the late 24th century, with the third season of Star Trek: Discovery jumping forward to the 32nd century. However the franchise has also outlined a fictional future history of Earth prior to this, and, primarily through time travel plots, explored both past and further-future settings.
"The Galileo Seven" is the sixteenth episode of the first season of the American science fiction television series Star Trek. Written by Oliver Crawford and directed by Robert Gist, it first aired on January 5, 1967.
"Obsession" is the thirteenth episode of the second season of the American science fiction television series Star Trek. Written by Art Wallace and directed by Ralph Senensky, it was originally broadcast on December 15, 1967.
"Return to Tomorrow" is the twentieth episode of the second season of the American science fiction television series Star Trek. Written by John T. Dugan and directed by Ralph Senensky, it was first broadcast February 9, 1968.
"Is There in Truth No Beauty?" is the fifth episode of the third season of the American science fiction television series Star Trek. Written by Jean Lisette Aroeste and directed by Ralph Senensky, it was first broadcast on October 18, 1968.
Shuttlecraft are fictional vehicles in the Star Trek science fiction franchise built for short trips in space, such as between a planetary surface and orbit. Also referred to as shuttles, their introduction preceded the development of the Space Shuttle.
"Requiem for Methuselah" is the nineteenth episode of the third season of the American science fiction television series Star Trek. Written by Jerome Bixby and directed by Murray Golden, it was first broadcast on February 14, 1969.
"The Savage Curtain" is the twenty-second episode of the third season of the American science fiction television series Star Trek. Written by Gene Roddenberry and Arthur Heinemann and directed by Herschel Daugherty, it was first broadcast on March 7, 1969.
"The Lights of Zetar" is the eighteenth episode of the third season of the American science fiction television series Star Trek. Written by Jeremy Tarcher and his wife Shari Lewis and directed by Herb Kenwith, it was first broadcast on January 31, 1969.
Spock Must Die! is an American science fiction novel written by James Blish, published February 1970 by Bantam Books. It was the first original novel based on the Star Trek television series intended for adult readers. It was preceded by a tie-in comic book line published by Gold Key and the novel Mission to Horatius by Mack Reynolds, all intended for younger readers.
"Cathexis" is the 13th episode of Star Trek: Voyager, a science fiction television show that ran from 1995–2001. Part of the Star Trek franchise, it features a starship from the United Federation of Planets stranded on the other side of the Galaxy that must make its way home as it encounters aliens and various phenomena. On board a mixture of Federation, Maquis, and alien crew members live and work.
Federation (1994) is a science fiction novel written by Judith and Garfield Reeves-Stevens. It is a tie-together chronicle that brings the original Enterprise adventures of James T. Kirk close to an encounter with the Enterprise-D adventures of Jean-Luc Picard.
Several characters within the Star Trek franchise, primary and secondary, often made crossover appearances between one series and another. This included appearances of established characters on premiere episodes of new series, a few long-term transfers from one series to another, and even crossovers between Trek films and television. A few crossover appearances, such as that of Spock on The Next Generation and the time-travel of the crew of Deep Space Nine to the era of The Original Series were especially lauded by both fans and critics.
Galileo is a fictional spacecraft that appeared in the 1960s American science-fiction television series Star Trek. It was a shuttlecraft assigned to the USS Enterprise, and was the first of its type to be seen on screen in the franchise, appearing in the episode "The Galileo Seven". It appeared an additional four times in the series before being replaced by the Galileo II, a repaint of the full-size exterior model.
The following outline is provided as an overview of and topical guide to Star Trek:
