The Planet of Doubt Jupiter and Saturn and on the surface of Uranus itself. At the time "The Planet of Doubt" takes place at the turn of the 22nd century, the limited range of the spaceships ensures that Uranus can only be reached from the American base on Titan when Saturn reaches conjunction with Uranus, an event that occurs once every forty years. The Young expedition explored the planet's south pole in 2060; now Hammond takes his ship, the "Gaea", to the north pole. Finding an ocean at the north pole, Hammond sends the "Gaea" spiraling southeast until they reach land. They find the
Gaea (Marvel Comics) #10 (1982). Gaea is one of the Elder Gods who were born when the entity called the Demiurge spread his essence over the Earth, at a time when life was starting to evolve on the planet. Gaea felt empathy for the lesser lifeforms and decided to watch over them. However, the rest of the gods, following the example of Set the Snake God, started eating each other to increase their power, a process that turned all but Gaea into demons. Worried that they might menace the organic life forms, Gaea summoned the Demiurge and "mated" with it, to give birth