Lowell Observatory Lowell Observatory Lowell Observatory is an astronomical observatory in Flagstaff, Arizona, United States. Lowell Observatory was established in 1894, placing it among the oldest observatories in the United States, and was designated a National Historic Landmark in 1965. In 2011, the Observatory was named one of "The World's 100 Most Important Places" by TIME. It was at the Lowell Observatory that the dwarf planet Pluto was discovered in 1930 by Clyde Tombaugh. The observatory was founded by astronomer Percival Lowell of Boston's Lowell family and is overseen by a sole trustee, a position historically handed down through the family. The
Michigan State University Observatory MSU campus. In 1880, Professor Rolla C. Carpenter built an observatory for the (then) State Agricultural College to house an Alvan Clark & Sons refracting telescope of 5.5 inches aperture. The observatory was located behind his residence at Faculty Row No.2, near where Sarah Langdon Williams Hall stands today. The original telescope is on exhibit at the Abrams Planetarium. Approximately one pair of evenings per month, if the sky is sufficiently clear, the MSU observatory opens its doors for public observing. The MSU 0.6 meter telescope will be set up for viewing on selected astronomical objects throughout the evening. Also,