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) Gaea (Marvel Comics) Gaea is a fictional character appearing in American comic books published by Marvel Comics. The character is based on the Gaia of Greek mythology and Jörð of Norse mythology. She is a primeval Earth goddess, who has enfused her life essence into those of all Earth's living beings. She is the embodiment of the spirit of life, growth, harvest, and renewal on Earth. She is the biological mother of Thor. Gaea first appeared in "Doctor Strange" (vol. 2) #6-8 (February–June 1975), and was created by Steve Englehart and Gene Colan. Her origin was revealed in "Thor Annual"