Fifth planet (hypothetical) orbit as defined by the Titius–Bode law. Between 1845 and 1851, eleven additional asteroids were discovered and Jupiter had become the twentieth planet. At this point, astronomers began to classify asteroids as minor planets. Following the reclassification of the asteroids in their own group, Jupiter became the fifth planet once again. With the redefinition of the term "planet" in 2006, Ceres is now considered a dwarf planet. The disruption theory suggests that a planet which was positioned between Mars and Jupiter was destroyed, resulting in the asteroid belt between these planets. Scientists in the 20th century dubbed this hypothetical planet
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