A telescope at Lowell Observatory, Flagstaff, Arizona, USA - the planet Pluto was discovered using this telescope

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Size: 2832px × 4256px
Location: Mars Hill Road, Flagstaff, Arizona, USA
Photo credit: © Brian Green / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: arizona, astronomer, astronomy, clyde, cosmology, cosmos, dark, flagstaff, lowell, matter, observatory, observer, observers, percival, pluto, science, slipher, space, telescope, tombaugh, universe, vesto