How Arizona put Pluto on the map 95 years ago today
Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary ...
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How Arizona put Pluto on the map 95 years ago today
Discovered in 1930 at Lowell Observatory in Flagstaff, Arizona, Pluto was hailed as the ... Be spherical in shape (Pluto is round due to its gravity). Clear its orbit of other debris (Pluto ...