Third Earth

Third Earth is a distant planet situated in a dimension far from Dimension Four. Despite what its name may make one think, it has little to do with Earth; instead, it is an entirely different, new planet.

According to the game, Third Earth is the homeworld of Nes.

Early History
In the far future, citizens of Earth fled their planet in order to escape some unnamed disaster. After years and years of wandering aimlessly through the galaxy, the people were able to finally colonize a planet which they called Second Earth. Eventually they were able to expand to yet another planet, Third Earth.

SuperSkye
The planet Third Earth is never shown in SuperSkye. However, it is mentioned by Nes while he explains himself to Skye and Holly. It is described as a lush environment not unlike Skaylia.

The fate of Third Earth is completely unknown. It is implied by some of Nes's comments that he may have left Third Earth after volunteering for a pilot program with the Flumes, somethinng not unlike what he did in The Displacement of Nes Garrow. Alternatively, Megacorp, or perhaps some other organization, attacked it viciously in hopes of gaining some sort of control and Nes is the disaster's lone survivor.