The 24-inch Alvan Clark Telescope at Lowell Observatory, Flagstaff, Arizona, USA

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

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