A remote jungle planet where the cyberneticist Noonian Soong lived in secret after escaping Omicron Theta, and where he summoned Data in 2367.
Terlina III is an out-of-the-way planet with dense jungle, the hidden home of Doctor Noonian Soong in his final years. It appears in the fourth-season Next Generation episode Brothers.
Soong was thought to have died when the Crystalline Entity destroyed the Omicron Theta colony. In fact he had an escape route ready and went on working alone in a laboratory on Terlina III. In 2367, knowing that he is dying, he triggers a homing signal that makes Data seize control of the Enterprise-D and fly it there.
Soong has built a chip that would give Data basic emotions. The signal also draws Lore, who had been drifting in space. Lore disables Data, takes his place, receives the chip meant for his brother and fatally injures their creator before fleeing. Data is left to say goodbye to his father.