Fifth planet (hypothetical) into the Sun. Unlike the Disruption Theory's fifth planet, "Planet V" is not credited with creating the asteroid belt. The concept of a fifth planet which had been destroyed to make the asteroid belt, as in the Disruption Theory, has been a popular one in fiction. 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,
Parasite Planet Venus. Doughpots are a huge collection of protoplasm that absorbs everything in its path. "Parasite Planet" appears in the following Stanley G. Weinbaum collections: Parasite Planet "Parasite Planet" is a science fiction short story by Stanley G. Weinbaum originally published in the February 1935 issue of "Astounding Stories". It was Weinbaum's fourth published story, and the first to be set on Venus. He quickly followed it up with a sequel called "The Lotus Eaters". In the story, tidal locking keeps one side of Venus perpetually facing the Sun. This side of the planet is a barren desert. Towards the planet's