The refracting telescope in the Pluto Dome at the Lowell Observatory where Clyde Tombaugh discovered Pluto.

---

The refracting telescope at the Lowell Observatory in Flagstaff Arizona in the Pluto Dome It is one of the oldest and best known observatories in the US and is the place where Clyde Tombaugh discovered Pluto It is a National Historic Landmark

---

Size: 5100px × 3387px
Location: Flagstaff Arizona USA
Photo credit: © Don Smetzer / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: arizona, astronomy, attraction, az, clyde, exploration, flagstaff, historic, landmark, lowell, national, observatory, pluto, refracting, telescope, tombaugh, tourist