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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HubbleSite -- Out of the ordinary...out of this world.
Public education site from the Hubble Space Telescope Science Institute, featuring a showcase gallery of images, the latest news, technical facts and figures, and ...
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astronomy
space
science
hubble
nasa
photography
photos
images
wallpaper
telescope
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Astronomy Notes
Complete astonomy textbook for first-year college courses.
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astronomy
science
education
physics
astrophysics
reference
space
teaching
cosmology
stars
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Planetary Photojournal: NASA's Image Access Home Page
Images of the planets, the Sun, asteroids, and comets. NASA's Photojournal provides easy access to images from various NASA Solar System exploration missions.
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astronomy
space
nasa
science
images
photos
photography
planets
reference
photo
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Celestia: Home
Downloadable real-time space simulation that lets users experience the universe in three dimensions.
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astronomy
space
software
science
simulation
freeware
opensource
3d
free
education
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Google Sky
No information avaiable
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google
astronomy
space
science
sky
maps
googlemaps
map
reference
education
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Skymaps.com - Publication Quality Sky Maps & Star Charts
Quality sky maps (star charts) for stargazing, education and publishing. The Evening Sky Map free each month. Find constellations, planets and comets.
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astronomy
maps
stars
space
map
starchart
science
reference
free
astronomia
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WorldWide Telescope
Turn your computer into a virtual telescope. Microsoft's WorldWide Telescope brings together imagery from the best ground and space-based telescopes for a seamless exploration of the universe. Also offers guided tours of the sky by astronomers and educators.
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astronomy
science
telescope
space
microsoft
education
software
research
visualization
web2.0
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Amazing Space
Set of web-based activities primarily designed for classroom use.
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science
space
astronomy
education
interactive
planets
physics
resources
solarsystem
research
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Center for Astrophysics
No information avaiable
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astronomy
science
physics
astrophysics
cosmology
reference
resources
astrology
space
observatory
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Encyclopedia Astronautica
Reference source containing links to information on rockets, spacecraft, programs, astronauts, and more.
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space
science
reference
encyclopedia
history
astronomy
technology
rocket
nasa
spaceflight
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