The United States Naval Observatory is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of D
An aerial view of the United States Naval Observatory in 2004
United states navy observatory seal
Naval Observatory Flagstaff Station
Number One Observatory Circle, official home of the U.S. vice president.
Arthur Hoag
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Arthur Allen Hoag was an American astronomer most famous for his discovery of Hoag's Object, a type of ring galaxy, in 1950. He worked at the Naval Ordnance Laboratory, was director of the stellar div
Hoag's Object, taken by the Hubble Space Telescope in July 2001