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) were accepted, and the Celestials left without destroying the Earth. Gaea, in the form of a dark-haired woman, then healed the wounded Thor, and explained the whole story to him. She also told him how he could restore the Asgardians' souls to their bodies with help from all the other Godheads, which he then went on to obtain. Gaea then went back to being 'one with the planet'. Years later, Gaea's magic was invoked by the evil alien Yandroth to curse the group of heroes known as The Defenders into coming together to fight threats to Earth against their will,