FACTOID # 16: In the 2000 Presidential Election, Texas gave Ralph Nader the 3rd highest popular vote count of any US state.
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 


FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:



(* = Graphable)



Encyclopedia > US Naval Observatory
Aerial view of USNO.

The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States. It is located in Washington, D.C.. It is one of the very few observatories located in an urban area (when it was initially constructed, there was no concern about light pollution).

Established in 1830 as the Depot of Charts and Instruments, the observatory's primary mission was to care for the U.S. Navy's chronometers, charts and other navigational equipment. It calibrated ships' chronometers by timing the transit of stars across the meridian. Initially located downtown in Foggy Bottom (near the Lincoln Memorial and the Kennedy Center), the observatory moved to upper Northwest Washington in 1893, where it is sited on top of a hill overlooking Massachusetts Avenue, amidst perfectly circular grounds.

Today, the U.S. Naval Observatory is the preeminent authority in the areas of time-keeping and celestial observation. It determines and distributes the timing and astronomical data required for accurate navigation and fundamental astronomy, but perhaps it is best known to the general public for its highly accurate atomic clock.

Since 1974 Number One Observatory Circle, a house situated in the grounds of the observatory (formerly the residence of its superintendent), has been the official residence of the Vice President of the United States.

External link

  • USNO official site (http://www.usno.navy.mil/)



Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m