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What was discovered in Flagstaff, Arizona, and killed off in Prague? If you answered "Pluto's planethood," your grasp of the ...
Pluto may not be a planet any more, but you still have a chance to see the distant dwarf planet at one of Michigan's ...
From farm boy to cosmic pioneer: The life and legacy of Clyde Tombaugh. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. When Clyde Tombaugh ...
A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...
Clyde Tombaugh didn't set out to discover Pluto when he sent his sketches of the night sky to Lowell Observatory in Flagstaff ...
Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.