In 1930, who discovered the planet Pluto, now re-designated an asteroid?
Tombaugh Tombaugh, C. W. Tombaugh, Clyde W. CLYDE TOMBAUGH Clyde William Tombaugh Clyde Tombaugh Clyde W. Tombaugh C. W. Tombaugh Tombaugh, Clyde
clyde w tombaugh clyde tombaugh tombaugh clyde clyde william tombaugh tombaugh c w tombaugh tombaugh clyde w tombaugh c w
clyde tombaugh
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CLYDE TOMBAUGH