5 Things to Know about the U.S. Naval Observatory
The U.S. Naval Observatory continues to be the leading authority in the United States for astronomical and timing data required for such purposes as navigation at sea, on land, and in space, as well as for civil affairs and legal matters. On this International Astronomy Day, here are 5 things to know about the observatory: …
5 Things to Know about the U.S. Naval Observatory
The U.S. Naval Observatory continues to be the leading authority in the United States for astronomical and timing data required for such purposes as navigation at sea, on land, and in space, as well as for civil affairs and legal matters. On this International Astronomy Day, here are 5 things to know about the observatory: …