23rd century

The 23rd century, defined in the calendar of Earth as being from 2201 until 2300, was a period of expansion for the United Federation of Planets, with Humans and other founding species, such as Vulcans, at the forefront of exploration. The Federation's exploration agency Starfleet would make first contact with numerous intelligent species and civilizations, including the Talosians, the First Federation, the Gorn Hegemony. the Metrons, the Horta, and the Excalbians. The long-running conflict with the Klingon Empire, begun in the 22nd century, was a major part of this century's history, as was the rekindling of tensions with the Romulan Star Empire. Of particular note are the voyages of the USS Enterprise and the careers of its long-serving command staff under James T. Kirk.

Decades[]

Major events[]

2223

Relations between the Federation and the Klingon Empire degenerate starting a tense cold war. (Star Trek VI: The Undiscovered Country)

2243

The duotronic computer is invented by Doctor Richard Daystrom, becoming the primary computing platform for all Starfleet vessels for the following eighty years. (TOS: "The Ultimate Computer"; TNG: "Relics")

2245

The Federation starship USS Enterprise is launched under the command of Captain Robert April. (TAS: "The Counter-Clock Incident"; DIS: "Brother")

The Federation starship USS Constellation launches under the command of Captain Matthew Decker.(PIC: "The Star Gazer" commemorative plaque [1]^(X))

The Battle of Donatu V is fought between the Federation and Klingon Empire. (TOS: "The Trouble with Tribbles")

2256

An open war between the Federation and the internally riven Klingon Empire breaks out. (DIS: "Battle at the Binary Stars")

2257

The costly Federation-Klingon war comes to an end and the Klingon Empire is politically stabilized. (DIS: "Will You Take My Hand?")

2258

Control is defeated and the mystery of the Red Angel is discovered by the crews of the USS Discovery and the USS Enterprise. After the conflict, the crew of Discovery jump 930 years into future. (DIS: "Such Sweet Sorrow", "Such Sweet Sorrow, Part 2")

2265

The El-Aurian homeworld is destroyed by the Borg. (TNG: "Q Who") Klingons and Federation sign some kind of peace treaty. (TOS: "Day of the Dove")

2266

After a century of isolation, the Romulan Star Empire engages in a series of unprovoked attacks on several outposts along the Romulan Neutral Zone. During the incident, the first visual contact of the previously unseen Romulans themselves are made, revealing them to be an offshoot of Vulcans. (TOS: "Balance of Terror")

2267

Federation-Klingon relations improve with the signing of the Treaty of Organia. Together with the Romulan Star Empire the two powers also establish a "colony of galactic peace" on Nimbus III. (TOS: "Errand of Mercy"; Star Trek V: The Final Frontier)

2278

The USS Bozeman disappears while on the Typhon Expanse. (TNG: "Cause And Effect")

2285

The detonation of the Genesis Device during the Battle of the Mutara Nebula, results in the formation of the first artificially-created planet. Due to the use of protomatter in the development of the device, however, the planet proves to be unstable and destroys itself soon after. (Star Trek II: The Wrath of Khan, Star Trek III: The Search for Spock)

2286

Earth is again saved from being obliterated by a probe of unknown origin. (Star Trek IV: The Voyage Home)

2293

Despite the prior assassination of Klingon Chancellor Gorkon, the Khitomer Accords between the Federation and the Klingon Empire are signed at the Khitomer Conference to establish a lasting peace between the two powers. (Star Trek VI: The Undiscovered Country)

Alternate reality[]

2233

The USS Kelvin is destroyed battling the Narada. (Star Trek)

2258

The Narada uses red matter to destroy Vulcan. The crew of the newly-launched USS Enterprise prevents a similar fate befalling Earth. (Star Trek)

2259

After a bombing in London, an attack on Starfleet Headquarters, and a massacre on Qo'noS, the terrorist Khan Noonien Singh crashes the dreadnought USS Vengeance into San Francisco before being arrested by the Enterprise crew and returned to cryogenic sleep. (Star Trek Into Darkness)

2260

A fully recovered Kirk gives a stirring speech about the principles of the Federation, and embarks on his historic five-year mission aboard the Enterprise. (Star Trek Into Darkness)

2263

After only three years into its five year mission, the Enterprise is destroyed during a battle over the planet Altamid, when it is attacked by Krall and his Swarm ships. The long-lost USS Franklin is discovered intact on Altamid by Montgomery Scott. (Star Trek Beyond)

Events without specified years[]

Prime reality[]

Early 23rd century[]

• As of sometime between 2226 and 2240, the First Republic exists on Cardassia Prime and is known for its serialist poets such as Iloja of Prim, who is ultimately exiled on Vulcan, however. (DS9: "Destiny")
• Somewhere between 2236 and 2254, the time barrier is broken. (TOS: "The Cage")

Mid 23rd century[]

• A Vulcan science mission discovers a subspace rupture in the Hanoli system. The Vulcans attempt to seal the rupture with a pulse wave torpedo, but instead cause the rupture to expand exponentially. The entire star system, including the Vulcans, is wiped out. (DS9: "If Wishes Were Horses")
• The last diplomatic contact between the Kes and the Prytt Alliance before 2370 takes place on Kesprytt III. (TNG: "Attached")

Late 23rd century[]

• An attack on Earth by a massive machine lifeform called V'ger is closely averted in the 2270s. (Star Trek: The Motion Picture)
• The tribble species is eradicated by the Klingons. (DS9: "Trials and Tribble-ations")
• A group of young Ba'ku desires to follow the way of the offlanders. They attempt to take over the Ba'ku planet, but fail and get exiled, thereby becoming the Son'a. (Star Trek: Insurrection)

Unspecified[]

• Cloaking devices are installed aboard Klingon starships such as the IKS Klothos. (DS9: "Once More Unto the Breach")
• On the homeworld of the Haliians, the family of Aquiel Uhnari acquire a house they will live in for the next five generations. (TNG: "Aquiel")
• An alternate approach to the transporter, the Elway Theorem, is first tested in this century. Instead of utilizing subspace as the medium for which matter and energy are transported from one location to another, this form of transporting uses dimensions of space. In the end, this approach is rejected as fatal for the subject and being not as nearly as accurate as the transporter. (TNG: "The High Ground")
• The Klingon Empire relinquishes its claim to the Archanis sector. (DS9: "Broken Link")
• Bajoran musicians known as the Boldaric masters produce music. (DS9: "Crossover")
• The common use of invidium in medical containment fields is ended. (TNG: "Hollow Pursuits")
• The first small and unstable wormhole is mapped near a T-Tauri system. (TNG: "Clues")
• On Tagus III, the Taguans seal off the ruins to outsiders. (TNG: "Qpid")
• On Kaelon II, the theories of helium fusion enhancement are first proposed. (TNG: "Half a Life")
• An earthquake is registered on Penthara IV. For the next hundred years, the planet is seismically quiet. (TNG: "A Matter Of Time")
• The first diagnosis of Iresine Syndrome is made. (TNG: "Violations")
• The Federation raises the alarm about rising toxicity thinning the atmosphere of Urna. (DIS: "Die Trying")
• Sometime after Emperor Philippa Georgiou's departure from the mirror universe, the distance between the prime universe and the mirror universe began expanding. This expansion becomes so great that the last crossing between the two universes takes place in the 27th century, stranding any residents from the mirror universe who stayed in the prime universe, and vice versa. (DIS: "Die Trying")

Mirror universe[]

• Late 23rd century to early 24th century: Sometime between 2267 and 2270, Spock becomes commander-in-chief of the Terran Empire and implements several major reforms, turning the Empire into a more peaceful and less aggressive power. Prior to the full enactment of these reforms, the Terran Empire forces occupy Bajor. Spock's reforms leave the Empire unprepared to fight against the Klingon-Cardassian Alliance. The Alliance conquers the entire Terran Empire, enslaving the Terrans and Vulcans. (DS9: "Crossover")

Appendices[]

23rd century productions[]

External links[]

• 23rd century at Memory Beta, the wiki for licensed Star Trek works
• 23rd century at the Star Trek Online Wiki