Fifth planet (hypothetical) Fifth planet (hypothetical) In the history of astronomy, a handful of Solar System bodies have been counted as the fifth planet from the Sun. Under the present definition of a planet, Jupiter is counted as the fifth. There are three main ideas regarding hypothetical planets between Mars and Jupiter. During the early 19th century, as asteroids were discovered, they were considered planets. Jupiter became the sixth planet with the discovery of Ceres in 1801. Soon, three more asteroids, Pallas (1802), Juno (1804), and Vesta (1807) were discovered. They were counted as separate planets, despite the fact that they shared an
The Fifth Season (novel) The Fifth Season (novel) The Fifth Season is a 2015 science fantasy novel by N. K. Jemisin. It was awarded the Hugo Award for Best Novel in 2016. It is the first volume in the "Broken Earth" series and is followed by "The Obelisk Gate" and "The Stone Sky". "The Fifth Season" takes place on a planet with a single supercontinent called the Stillness. Every few centuries, its inhabitants endure what they call a "Fifth Season" of catastrophic climate change. The society of the Stillness is broken up into many "comms", "use-castes", races and species. Use-castes: In a prologue, an