Tethys III was the third planet in its star system. The planet was a hydrogen-helium gas giant with a frozen helium core. This planet was located several hundred light years away from the Ngame Nebula.

In 2367, the crew of the USS Enterprise-D used the planet as a basis for concealing the Paxan homeworld in a T-Tauri type star system located within the nebula. (TNG: "Clues")

According to the script, Tethys III was a Neptune-like planet.
"Tethys" was the daughter of the Greek gods Uranus and Gaia, and was the eponym of one of Saturn's moons.
Community content is available under CC-BY-NC unless otherwise noted.