Andoria is an icy moon orbiting a gas giant. It is home to two related humanoid species, the Andorians and the Aenars. The Andorians are co-founders of the United Federation of Planets, passionate warriors, while the Aenars are pacifists, blind, but telepathic. The planet has an oxygen atmosphere similar to Earth's, but it is very cold. Surface temperatures only exceptionally reach values above zero. Both Andorian races live in underground cities and use mainly geothermal energy. Andoria is surprisingly considered a tourist attraction where you can go climbing.