The United States Naval Observatory
The U.S. Naval Observatory is the preeminent authority in the areas of precise time and astronomy.
http://www.usno.navy.mil/
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astronomy
science
time
weather
reference
space
government
observatory
navy
oceanography
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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
Current research news plus daily forecasts of solar flares and geo-magnetic storms from NASA.
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astronomy
space
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weather
news
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auroras
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sun
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Time Service Dept., United States Naval Observatory
... lunar phase images which use direct links to tycho.usno.navy.mil may no longer be available. ... Send comments on this page to webmaster@tycho.usno.navy.mil ...
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time
reference
clock
science
government
astronomy
gps
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navy
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USNO Astronomical Applications Department
... portal is currently online at http://www.usno.navy.mil and is being populated. ... About AA. Information about the department and its history ...
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astronomy
science
reference
moon
tools
time
calendars
sun
space
data
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NASA - Home
Official site for NASA, the United States space agency, providing current information on its robotic and manned space exploration missions.
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space
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nasa
astronomy
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technology
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planets
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WIKISKY.ORG
Interactive online sky map ... WIKISKY.ORG. Stars That Shine Forever. Supernova: Chich. Nova: Pasquale Nanula. HE IT FR ZH RU SV PT SR PL DE HU ES JA EN KO TR EL ...
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astronomy
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maps
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visualization
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cool
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map
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Heavens-Above Home Page
Dynamically generated pages which give visible satellite passes and real-time orbit displays for any location in the world.
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astronomy
space
science
satellites
satellite
reference
stars
maps
tracking
iss
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StarDate Online - Your Guide to the Universe
Non-technical, current, astronomy information, news, and photographs. Night sky maps and viewing tips. Daily StarDate radio scripts (English and Spanish)
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astronomy
science
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stars
reference
education
radio
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Windows to the Universe
User-friendly learning system on the earth and space sciences for use by the general public. From the University Corporation for Atmospheric Research.
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astronomy
space
education
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reference
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physics
interactive
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Archaeoastronomy pinpoints equinox, solstice and cross quarter moments throughout the year
Track seasonal cusp moments in universal time, according to the Earth's orbit. Includes lessons on the astronomical mechanics of equinoxes, soltices, and cross quarters.
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astronomy
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calendar
space
reference
archeoastronomy
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archaeoastronomy
time
pagan
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The Nine Planets Solar System Tour
Multimedia tour of the solar system -- one star, eight planets, and more -- with pictures, text, sound, and references to other resources.
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astronomy
planets
space
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