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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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Current research news plus daily forecasts of solar flares and geo-magnetic storms from NASA.
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astronomy
space
science
weather
news
solar
auroras
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sun
education
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... 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
weather
usno
navy
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... 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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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
science
nasa
astronomy
education
technology
government
planets
usa
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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
space
science
maps
wiki
visualization
reference
cool
stars
map
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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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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
space
stars
reference
education
radio
moon
podcast
resources
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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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science
astronomy
space
education
solarsystem
universe
reference
resources
physics
interactive
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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
science
calendar
space
reference
archeoastronomy
education
archaeoastronomy
time
pagan
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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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science
astronomy
planets
space
solarsystem
reference
solar
system
education
solar_system
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