• Sky and Telescope:    The Web site for Sky & Telescope magazine with weekly updates of sky events including planetary positions, comets and meteor showers, space exploration, breaking scientific news, telescope making, and more.
• SkyMaps.com:  Downloadable sky maps for any month of the year.
• The National Aeronautics and Space Administration (NASA):  Information about America's space initiatives.
• The Hubble Space Telescope Science Institute:   News and images from one of mankind’s greatest technological achievements.
• Universe Today:  Space News from Around the Internet Updated Every Weekday.
• The International Dark-Sky Association:  An organization dedicated to restoring the view of the night sky and educating citizens, businesses, and government about proper and efficient nighttime lighting practices.
• The Astronomical Data Center Home Page:   An astronomical archive of space science data.
• Gary Kronk's Comets and Meteor Showers Page:  Useful and timely information about meteor showers and comets that are currently visible.
• Jet Propulsion Laboratory:  Follow the progress of planetary exploration at these sites:  Cassini Mission to Saturn, Galileo Mission to Jupiter, The Pathfinder Mission to Mars/Sagan Memorial Station.
• SEDS Internet Headquarters:   A comprehensive resource of astronomical information and images.
• The Astronomical Society of the Pacific:   Popularizes astronomy and is a leading source of astronomical books and information on the West Coast.
• Solar System Simulator.  JPL and NASA have build an awesome simulator that lets you view any solar system object from any other solar system object.
• Reasons to Believe.  A resource worth checking into for those who insist that science and religion must conflict.
• Astronomy Simulations:  Cool simulations from the Astronomy 101/103 web site by Professor Terry Herter at Cornell University.

More links can be included, of course.  The above links, however, are good gateways to other sites on the Internet.
 

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