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What is a dwarf planet and why was Pluto demoted as one? Here are all the facts you need to know about dwarf planets.

United statesPhilip metzgerA schaller stscEsaa parker swUniversity of central florida space instituteInternational astronomical unionKuiper beltNew horizonsRapa nuiEaster islandCentral floridaFlorida space instituteDwarf planetDwarf planetsHat isa dwarf planetWarf planet facts