2151

== Events ==
=== By starship or station ===
; 
* April
**Humanity unofficially makes first contact with the Klingon Empire when Klaang crash-lands in Broken Bow, Oklahoma. ()
**Earth Starfleet launches , its first starship to use the warp five engine, opening up a new age of exploration for Earth. Enterprise also begins Humanity's involvement in the Temporal Cold War with the first encounter with the . ()
* May
**Enterprise NX-01 makes contact with Sluggo, whom they relocate to another planet after it has difficulty adjusting to the environment on the ship. ()
* June
** Enterprise NX-01 ran along a protostar a week before the incident at P'Jem. ()
** – Humanity makes first contact with the Andorians; the Andorian Imperial Guard finally corroborates the existence of a Vulcan surveillance listening post at P'Jem. ()
* August
** The crew of Enterprise prevent the crew of the initiating hostilities between the Nausicaans and Earth Cargo Service freighters. ()
* October
**The Andorians destroy the facility on P'Jem, though they give sufficient warning for personnel present to evacuate first. ()
** The Paraagan colony on Paraagan II was visited by outsiders. The foreman of the colony would later inform T'Pol of this fact during the 's visit to the planet six months later. ()
* December
**Enterprise has an encounter with the Ferengi, though the name of the species is not discovered until 2364. (; )
** arrives on a planet to scavenge material from a derelict Kantare supply ship. They offer the castaways repairs and ultimately rescue Ezral and Liana. ()
** Captain Jonathan Archer is instrumental in the liberation of Detention Complex 26 on Tandar Prime which later gives him a reputation of legendary proportions as an invincible warrior. ()
* Other Earth first contacts this year include the Akaalis, the Axanar, the Coridanites, the Eska, the Kantare, the Malurians, the Menk, the Valakians, and the Xyrillians. (, , )
;Shenandoah
* Duvall is promoted to Captain and is given command of the Shenandoah. ()
=== Other events ===
* Earth reestablishes contact with the lost Terra Nova colony. ()
* T'Pol confides in Commander Charles Tucker III that she had been arranged to be married, a situation that was causing her some concern. ()
* Archer's Comet is discovered by the crew of the Enterprise NX-01 and named after the ship's captain, Jonathan Archer. ()
* Hernandez begins to move away from an explorer's mindset. ()
* experiences what is believed to be the first inter-species pregnancy involving a Human. ()
* Travis Mayweather and Gannet meet each for the last time before the Coalition of Planets talks on Earth in 2155. ()
== Episodes ==
* April
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* May
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* June
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* July
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* August
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* September
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* October
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* November
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* December
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==External link==
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