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
Brother from the Same Planet reference a scene from the episode where Homer "argues with his own brain about a desired course of action" to illustrate self-discrepancy theory, the idea that "humans will go to great lengths to attain and preserve self-esteem". The writers of the FOX program "King of the Hill" put "Brother from the Same Planet" among the five best episodes of "The Simpsons", including "Homer the Heretic", "Lisa's Wedding", "Lisa's Substitute", and "Behind the Laughter". Mikey Cahill of the "Herald Sun" highlighted the quote "PickupBart? What the hell is PickupBart?" by Homer in his list of "Fab Fives" related to "The Simpsons".