The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation, and Timing (PNT) for the U.S. Navy and the U.S. Department of Defense. Located in Northwest Washington, D.C., it is one of the pre-1900 astronomical observatories located in an urban area; at the time of its construction, it was far from the light pollution thrown off by the (then-smaller) city center. Today, the observatory's primary observational work is done at the U.S. Navy's higher elevation United States Naval Observatory, Flagstaff Station (NOFS) near Flagstaff, Arizona. USNO also has an "Alternate Master Clock" site in Colorado Springs, CO which, with the "Master Clock", provides precise time to the GPS satellite constellation run by the U.S. Air Force; and it performs radio VLBI-based positions of quasars with numerous global collaborators, in order to produce Earth Orientation parameters. Aside from its scientific mission, since 1974, the Observatory is the official residence of the Vice President of the United States.
Read more about United States Naval Observatory: History, Departments, Time Service, Publications
Famous quotes containing the words united states, united, states, naval and/or observatory:
“What lies behind facts like these: that so recently one could not have said Scott was not perfect without earning at least sorrowful disapproval; that a year after the Gang of Four were perfect, they were villains; that in the fifties in the United States a nothing-man called McCarthy was able to intimidate and terrorise sane and sensible people, but that in the sixties young people summoned before similar committees simply laughed.”
—Doris Lessing (b. 1919)
“The popular colleges of the United States are turning out more educated people with less originality and fewer geniuses than any other country.”
—Caroline Nichols Churchill (1833–?)
“The people of the United States have been fortunate in many things. One of the things in which we have been most fortunate has been that so far, due perhaps to certain basic virtues in our traditional ways of doing things, we have managed to keep the crisis of western civilization, which has devastated the rest of the world and in which we are as much involved as anybody, more or less at arm’s length.”
—John Dos Passos (1896–1970)
“Yesterday, December 7, 1941Ma date that will live in infamy—the United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan.”
—Franklin D. Roosevelt (1882–1945)
“Where there is an observatory and a telescope, we expect that any eyes will see new worlds at once.”
—Henry David Thoreau (1817–1862)