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Aldebaran III was the inhabited third planet in the Aldebaran system. The planet was located in the Beta Quadrant and was approximately 67 light years from Sol. (TOS: "The Deadly Years"; TNG: "Up The Long Ladder", okudagram)

During the 2260s, Doctors Janet and Theodore Wallace performed experiments using various carbohydrate compounds to slow down the degeneration of plant life at the Federation outpost on this planet. (TOS: "The Deadly Years")

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This planet's quadrant of origin was inferred based on the position of its star system as seen in the star charts appearing in episodes of Star Trek: Discovery, Star Trek: Picard, and Star Trek: Strange New Worlds.

In the script for "Prophet Motive", Aldebaran was listed in the pronunciation guide, where the term was pronounced as "al-DEB-uh-ron".

In StarTrek.com, Aldebaran III was identified as a long-time Federation member. [1](X) This website, and the Star Trek Encyclopedia, 4th ed., vol. 1, p. 16 – in an article about the Aldebaran system – treated Aldebaron III and Aldebaran III as the same planet.

In a listing of Federation members from the Star Trek: Star Charts ("United Federation of Planets I"), Aldebaran III was listed as a member. The listing was dated in-universe to the year 2378.

The current location of Aldebaran III in the Beta Quadrant was based on the most recent star charts seen in Star Trek: Strange New Worlds and Star Trek: Section 31.

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