Pluto and the City of Flagstaff, Arizona, are forever linked in history. On February 18, 1930, astronomer Clyde Tombaugh discovered Pluto at Lowell Observatory in Flagstaff, using a blink comparator and photographic plates. The New Horizons probe reached the Pluto system 85 years later last July, imaging Pluto, its largest moon Charon, and the other small moons.
Pluto has since been downgraded t...
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Pluto has since been downgraded t...
Continue reading...