Pluto is a dwarf planet in the Kuiper belt discovered in 1930. Pluto, named after the Roman god of the underworld, was downgraded from planet to dwarf planet by the International Astronomical Union (IAU) in 2006.
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PLUTO Pluto is a dwarf planet in the Kuiper belt discovered in 1930. Pluto, named after the Roman god of the underworld, was downgraded from planet to dwarf planet by the International Astronomical Union (IAU) in 2006.