General:

CDS VizieR Service SIMBAD ADS Abstract Service astro-ph

American Astronomical Society NIST Center for Adaptive Optics Center for High Angular Resolution Astronomy

STScI Digitized Sky Survey Infrared Science Archive Double Star Library Extrasolar Planets Encyclopedia

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Universities and Institutes: UAH Physics Department Caltech Astronomy Caltech GPS University of Texas Astronomy UCLA Astronomy Ohio State Astronomy Spitzer Science Center Space Telescope Science Institute

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Observatories: Keck Observatory McDonald Observatory Mt. Wilson Observatory Lick Observatory Kitt Peak National Observatory Cerro Tololo Inter-American Observatory NASA Infrared Telescope Facility or find others at Yahoo's list of Observatories

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Newsletters: Coolnews - cool stars and the sun Star Formation Newsletter - star formation STScI Newsletter - all things Hubble Active Galaxies Newsletter - observation and theory of active galaxies

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Last updated, 2007