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 War in Space third planet of the Yomi system in the Messier 13 nebula, 22,000 light years from our solar system. Takigawa then asks him why they want to take over Earth. Commander Hell tells him that their planet has died and that they need a new planet to live on. He then warns them that if they attack they will all die. The Gohten makes it to Venus and Miyoshi, Muroi and Jimmy use a small lander to find the alien spaceship. They find the enemy spaceship (later named the Daimakan) in a large cave with a force field around it. They