A dwarf planet is a celestial body that orbits the Sun and is similar to a planet but does not meet all the criteria to be classified as one. To be considered a dwarf planet, it must be spherical in shape, not clear its orbit of other debris, and not be a satellite of another body. Some well-known examples of dwarf planets include Pluto, Eris, and Haumea. Dwarf planets are found mainly in the Kuiper Belt, a region beyond the orbit of Neptune filled with icy bodies. They can vary in size and composition, and studying them helps scientists learn more about the early solar system and the formation of planets.