Earth (Elysian: Terra) is the third planet in the Sol System, the homeworld of the Humanoid Genui and the seat of government of the United Earth Republic. It is the largest of the four terrestrial planets in the Sol system.

Its population of 13.4 billion humans is divided among two hundred sovereign nations that make up the United Earth Republic. The planet is listed as a developing galactic world and is connected to Yiodsolaris and Niraxus 7 by the Three-Point Free Route, which is Earth's greatest source of trade.

Since its discovery and ascension into the Orion Forum, Earth has been a source of great controversy among the galactic Genui population, with talks of Earth one day joining the Energis Coalition. It is widely believed to be the lost Twelfth Colony of Elysia.