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Health and Science > Astronomy > Astronomical Measurement

Astronomy Websites

American Astronomical Society: www.aas.org
Asteroid and Comet Impact Hazards: http://impact.arc.nasa.gov
Center for Earth and Planetary Studies: www.nasm.si.edu/ceps
The International Astronomical Union: www.iau.org
NASA Home Page: www.nasa.gov
The Nine Planets: www.nineplanets.org
Planet Quest: http://planetquest.jpl.nasa.gov/
Space Telescope Science Institute (home of Hubble): www.stsci.edu/resources
U.S. Naval Observatory: www.usno.navy.mil

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Astronomical Measurement

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