By: Haley Sellers
what to think about
what connections can you see between how the IAU classifies planets, dwarf planets, and, small solar system objects now and in the past?
Discovery of Pluto
Pluto was discovered by Clyde Tombaugh on February 18, 1930. Pluto is part of the Kuiper belt. astronomers thought that their was another planet that was disturbing the orbit of Uranus besides Neptune. Later In 1894 they started a project to find this plant. They were unsuccessful but later Clyde was going through some of their pictures and he found a spot. After he found this spot he looked back and forth between newer and older pictures and discovered Pluto.