Dwarf Planets of Our Solar System (Infographic) by Karl Tate In 2006 the organization responsible for classifying celestial bodies, the International Astronomical Union, decided that a new class of objects was needed. The solar system's erratic ninth planet, Pluto, was assigned to the new “dwarf planet” category along with four other bodies, all tinier than Earth’s moon. Some astronomers expect there may be as many as 50 dwarf planets in the solar system.
Meet the 5 Dwarf Planets! by scishow: Our tour of the solar system isn’t over yet! Jessi introduces you to some of the most newly-named members of the solar system: the five dwarf planets! SOURCES:Dwarf Planets: Overview Dwarf Planets Dwarf Planet Facts The Kuiper Belt Support SciShow on Patreon