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
Uranus (mythology) the discovery of a sixth planet in 1781 using a telescope, there was long-term disagreement regarding its name. Its discoverer William Herschel named it Georgium Sidus (The Georgian Star) after his monarch George III. This was the name preferred by English astronomers, but others such as the French preferred "Herschel". Finally, the name "Uranus" became accepted in the mid-19th century, as suggested by astronomer Johann Bode as the logical addition to the existing planets' names, since Mars ("Ares" in Greek), Venus, and Mercury were the children of Jupiter, Jupiter ("Zeus" in Greek) the son of Saturn, and Saturn (Cronus in