Dwarf Planet
Dwarf Planet, type of body
in the solar system that has a rounded shape like a major planet, but is too
small to clear other bodies from the region of space around its orbit with its
own gravity. Dwarf planets orbit the Sun, and may have moons and atmospheres
like planets. However, they are found in regions of the solar system that
contain swarms of other small bodies: the asteroid belt, the Kuiper Belt, and
the Oort Cloud. Recognized dwarf planets include Pluto (formerly counted as the
ninth planet), Eris, and Ceres (formerly considered the largest asteroid).
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