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Welcome to Memory Alpha!

Memory Alpha is a collaborative project to create the most definitive, accurate, and accessible encyclopedia and reference for everything related to Star Trek. The English-language Memory Alpha started in November 2003, and currently consists of 41,938 articles. If this is your first visit, please read an introduction to Memory Alpha.


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29 November 2016
Doug Jones and Anthony Rapp have joined the cast of Star Trek: Discovery: their roles have also been revealed by CBS. [1]
Star Trek: Deep Space Nine regular background actor Brian Demonbreun has died at the age of 57 after a long battle with illness. [2]
26 November 2016
Star Trek: Deep Space Nine guest star Fritz Weaver has died at the age of 90. [3]
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Featured article

Thomas Riker, 2371

Thomas Riker in 2371

Thomas Riker was the result of a transporter accident in 2361 that created two William T. Rikers indistinguishable from each other. Eight years later, the USS Enterprise-D discovered Thomas on Nervala IV, the site of the accident, where he had been living in seclusion. Because of this seclusion, Thomas had remained deeply in love with Deanna Troi, and dwelt on the fact that he was unable to meet her on Risa later in the year of the mishap. Troi was reluctant to get involved with Thomas, but he eventually won her over, but when he had to leave the Enterprise-D, her feelings were not strong enough for her to leave with him. Thomas transferred to the USS Gandhi to continue his Starfleet career.

The following year, Thomas expressed dismay at the Federation's policies towards the Demilitarized Zone and joined the Maquis. Early the next year, Thomas posed as William Riker, boarded Deep Space 9 and stole the newly commissioned USS Defiant. With Kira Nerys as his unwilling passenger, Thomas flew to the Orias system where the Maquis believed that the Cardassians were building a fleet of warships. When they arrived, the Defiant was confronted by a fleet of Obsidian Order starships. Thomas surrendered himself to Gul Dukat's forces and received a life imprisonment sentence in a labor camp on Lazon II.
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Picture of the Day

The computer mouse was first put into practical use on this date in 1968.
Scotty uses a mouse

Scotty talks to a mouse.

"Hello computer..." - Scotty struggles with a 20th century Macintosh mouse. (Star Trek IV: The Voyage Home)

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