Pluto

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Pluto is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune. It was discovered by Clyde Tombaugh, an American astronomer, in 1930 and was originally considered the ninth planet from the Sun. Its status as a planet was questioned after other similar size objects were discovered in the Kuiper belt, and in 2006 the International Astronomical Union (IAU) officially reclassified it as a dwarf planet.

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