On Feb. 18, 1930, U.S. astronomer Clyde Tombaugh discovered the ninth planet, Pluto. But 82 years later, as more Kuiper Belt objects are discovered, Pluto's planetary status has become a bit hazy.
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Pluto at 82: A 'Chihuahua' Among Planets?
On Feb. 18, 1930, U.S. astronomer Clyde Tombaugh discovered the ninth planet, Pluto. But 82 years later, as more Kuiper Belt objects are discovered, Pluto's planetary status has become a bit hazy.
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