- After serving on the USS Enterprise-A for four years, Hikaru Sulu is promoted to Captain of the USS Excelsior.
- Three Klingon battle cruisers, commanded by Kor, Koloth, and Kang, are dispatched to apprehend the Albino. The raid is successful in breaking up most of the Albino's power base, but they fail to capture the Albino himself. In revenge, the Albino infects each of the three captain's firstborn sons with a genetic virus that will slowly kill the children.
- The Klingon battle cruiser IKS T'Ong is sent by the Klingon High Command on a high priority mission. For this mission, the crew is placed into cryogenic stasis.
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- Tuvok graduates from Starfleet Academy and is assigned to the starship USS Excelsior, under the command of Captain Sulu.
- Stardate 9521.6: The Klingon moon Praxis explodes.
- The USS Enterprise-A departs the Earth Spacedock to rendezvous with Kronos One. Captain James T. Kirk is framed for the assassination of Klingon Chancellor Gorkon. He and Dr. Leonard McCoy are given life sentences and sent to the dilithium mines of Rura Penthe but are both rescued by Captain Spock and the crew of the Enterprise-A.
- Starfleet opens up a classified database on the Borg, likely due to the contact with the El-Aurians, a species which has nearly been wiped out by the Borg, and the mysterious incident in 2153.
- The Khitomer Conference takes place, paving the way for nearly a hundred years of peace between the Klingon Empire and the Federation. Curzon Dax is one of the Federation diplomats present who negotiates the Accords.
- The USS Enterprise-A is decommissioned.
- The USS Enterprise-B is commissioned under the command of Captain John Harriman.
- The Nexus; a powerful, destructive energy-ribbon and inter-dimensional portal is discovered by the Federation for the first time with the crew of the Enterprise-B. It claims the lives of hundreds of El-Aurian refugees aboard the SS Lakul and SS Robert Fox which were both destroyed by the ribbon.
- Doing his part to save the Enterprise-B from being destroyed by the Nexus on her maiden voyage, Captain James Tiberius Kirk, one of the most celebrated Starfleet officers in history, is believed to be killed.
- Romulan political leader Lesanya Barel is born on Romulus.
- Rachel Garrett is born.
- The USS Jenolan, while en route to the retirement colony on Norpin V, encounters a Dyson sphere. While the Jenolan's captain investigates the sphere, the ship becomes trapped in it's gravity well and crashes. The only two survivors, Ensign Matt Franklin and passenger Captain Montgomery Scott, unable to wait for a rescue, place themselves in suspended animation by storing their patterns in the pattern buffer of the ship's transporter.
- A northern continent on Oby VI is afflicted by a plasma plague. Dr. Susan Nuress, the principal investigator, and her associates are sent by the Federation to find a cure. The initial cure proves ineffective.
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