In which year was Clyde Tombaugh born?
1897
1912
1920
1906
Answer
Clyde Tombaugh was born in 1906, he discovered Pluto in 1930 at the age of 24 while working at the Lowell Observatory in Flagstaff, Arizona. Tombaugh used a blink comparator, a device that rapidly alternated between two photographic plates taken at different times, to detect Pluto's movement against the background stars.
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