• NASA - the National Aeronautics and Space Administration
• Hubble Space Telescope Images
• Astronomy Picture of the Day
• StarDate at U. Texas
• Jack Horkheimer - Star Gazer
• McDonald Observatory
• SETI- the Search for ExtraTerrestrial Intelligence
• SETI@Home - analyze radio telescope data at home on your PC as a screensaver
• Sky and Telescope Magazine
• Astronomy Magazine
• Star names and their meanings
• Space Science at the U. S. Geological Survey Flagstaff Field Center featuring the Gazetteer of Planetary Nomenclature
• Peoria Astronomical Society
• Sunspots and the Solar Cycle
• Meteors, Meteorites and Impacts
• Nobel Laureates in Physics
• Fourmilab by John Walker
• Physics Unit Conversion Page
• Explorit! Science Center
• The Exploratorium
  • Astronomy Resources at the Exploratorium
  • The Exploratorium Science Snackbook
  • Your Weight on Other Planets
• Franklin Institute Science Museum
• Frank Potter's Science Gems
• Astronomy FAQ - Frequently Asked Questions
• Usenet Physics FAQ - Frequently Asked Questions

If you find a dead link, please contact me at the e-mail address shown on the Course Information (entry) page.