Emissary may refer to:
Star Trek: The Next Generation (TNG) is an American science fiction television series created by Gene Roddenberry. It originally aired from September 28, 1987, to May 23, 1994, in syndication, spanning 178 episodes over seven seasons. The third series in the Star Trek franchise, it was inspired by Star Trek: The Original Series. Set in the latter third of the 24th century, when Earth is part of the United Federation of Planets, it follows the adventures of a Starfleet starship, the USS Enterprise (NCC-1701-D), in its exploration of the Alpha quadrant in the Milky Way galaxy.
Star Trek: Deep Space Nine (DS9) is an American science fiction television series created by Rick Berman and Michael Piller. The fourth series in the Star Trek media franchise, it originally aired in syndication from January 3, 1993, to June 2, 1999, spanning 176 episodes over seven seasons. Set in the 24th century, when Earth is part of a United Federation of Planets, its narrative is centered on the eponymous space station Deep Space Nine, located adjacent to a wormhole connecting Federation territory to the Gamma Quadrant on the far side of the Milky Way galaxy.
Star Trek: Voyager is an American science fiction television series created by Rick Berman, Michael Piller, and Jeri Taylor. It originally aired from January 16, 1995, to May 23, 2001, on UPN, lasting for 172 episodes over seven seasons. It is the fifth series in the Star Trek franchise. Set in the 24th century, when Earth is part of a United Federation of Planets, it follows the adventures of the Starfleet vessel USS Voyager as it attempts to return home to the Alpha Quadrant after being stranded in the Delta Quadrant on the far side of the Milky Way galaxy.

Dukat is a fictional character from the television series Star Trek: Deep Space Nine. A member of the fictional Cardassian species, he is introduced as the former overseer of the series' namesake space station but goes on to become the leader of his species' governing body, the Cardassian Union. At times an enemy while at others an ally of Benjamin Sisko, Dukat appears in 35 of the series' 176 episodes. He was portrayed by Marc Alaimo throughout. Dukat became a fan favorite among Star Trek fans and he is widely considered to be one of the most iconic villains in the Star Trek franchise.
Collaborator or collaborators may refer to:
"Emissary" is the series premiere of the American science fiction television series Star Trek: Deep Space Nine. It was aired as a single two-hour episode on its initial broadcast, but was divided into two one-hour episodes when it aired in reruns.
"Caretaker" is the series premiere of the American science fiction television series Star Trek: Voyager. It was first broadcast as a double-length episode on January 16, 1995, as the first telecast of the fledgling UPN network. It was later split into two parts for syndication, but released in its original one-episode format on DVD and streaming services. Set in the 24th century, the series follows the adventures of the Starfleet and Maquis crew of the starship USS Voyager after they are stranded in the Delta Quadrant far from the rest of the Federation.
Runabouts are a fictional class of small, multi-purpose starships appearing in the Star Trek science-fiction franchise, primarily the television series Star Trek: Deep Space Nine, which aired on syndicated television between 1993 and 1999. They served as a means of transport for the crew of the fictional space station Deep Space Nine, in the early seasons of the series enabling storylines taking place away from the station.
A duet is a musical form for two performers.
The rapture is a predicted event in certain systems of Christian eschatology.
Babel is a name used in the Hebrew Bible for the city of Babylon and may refer to:

"What You Leave Behind" is the series finale of the television show Star Trek: Deep Space Nine, the 175th and 176th episodes, the 25th and 26th episodes of the seventh season. The episode was written by showrunner Ira Steven Behr and Hans Beimler and directed by Allan Kroeker. It originally aired the week of May 31, 1999.

Michael Piller was an American television scriptwriter and producer, who was best known for his contributions to the Star Trek franchise.
Abandon, abandoned, or abandonment may refer to:
"Destiny" is the 61st episode of the science fiction television series Star Trek: Deep Space Nine, the 15th episode of the third season.
Business as usual may refer to:
The Reckoning may refer to:
Star Trek is an American science fiction media franchise created by Gene Roddenberry, which began with the eponymous 1960s television series and quickly became a worldwide pop-culture phenomenon. The franchise has expanded into various films, television series, video games, novels, and comic books. With an estimated $10.6 billion in revenue, it is one of the most recognizable and highest-grossing media franchises of all time.

Deep Space Nine is a fictional space station, the eponymous primary setting of the American science fiction television series Star Trek: Deep Space Nine which aired from 1993 to 1999. It serves as a base for the exploration of the Gamma Quadrant via the Bajoran wormhole and is a hub of trade and travel for the sector's denizens. It is run by a joint crew of Starfleet and Bajoran officers and it is the home port of a number of Starfleet runabouts, as well as the starship USS Defiant.
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.