As for the three moons, it's a reference to Final Fantasy IX, where the world has two moons, one blue, which is the moon of Gaia and one red, which is the moon of Terra, which tried to assimilate Gaia five thousand years prior to the start of the game and failed, giving Gaia both. I added a white moon for Earth. So maybe Gaia tried to do to Earth what Terra did to Gaia?