Pluto was discovered by ?
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William Herschel
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John Kepler
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Hipparchus
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Clyle Tombaugh
D
Correct answer
Explanation
Pluto was discovered by Clyde Tombaugh in 1930 at the Lowell Observatory in Arizona. The name in the question appears to be a typo for 'Clyde.' Tombaugh was a 24-year-old amateur astronomer when he made this historic discovery.