Fictional planets of the Solar System have been depicted since the 1700s—often but not always corresponding to hypothetical planets that have at one point...

planets in fiction, see: Fictional planets of the Solar System, Extrasolar planets in fiction § List, and List of Star Wars planets and moons List of...

Planets outside of the Solar System have appeared in fiction since at least the 1850s, long before the first real ones were discovered in the 1990s. Most...

Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. Its gravitational effects could explain the peculiar clustering of...

as dwarf planets, leaving Neptune the farthest known planet in the Solar System. While the astronomical community widely agrees that Planet X, as originally...

trajectories, which none of them possess.[citation needed] Atira asteroid Fictional planets of the Solar System Hypothetical moon of Mercury Nemesis (hypothetical...

religion For hypothetical planets in fiction, see: Fictional planets of the Solar System Hypothetical types of extrasolar planets include: Marco Ceccarelli...

several fictional planets of the Solar System The planet Daffy Duck seeks in the 1953 Merrie Melodies cartoon Duck Dodgers in the 24½th Century The home...

than the planets in the Solar System. This means that some combination of very high speed (some more-than-fractional percentage of the speed of light)...

bodies, which includes minor planets (asteroids and dwarf planets), planets, and natural satellites. All geological features of a body (including craters)...