Mysteries of Deep Space PBS companion site explores the secrets of the universe with an interactive timeline, classroom activities, a trivia challenge, and questions and answers with experts. http://www.pbs.org/deepspace/

Association for Astronomy Education (AAE) An affiliate of the National Science Teachers Association. http://solar.physics.montana.edu/aae/

Infrared Imaging Learn about infrared imaging by viewing a variety of objects in the infrared. http://www.ipac.caltech.edu/Outreach/Edu/Guess/

Star Gazer Home Page Home of Jack Horkheimer. The first and only weekly TV series on naked eye astronomy. http://www.jackstargazer.com/

Properties of Our Solar System Introductory course taught at the University of Oregon. Includes course materials and many links to supplementary resources. http://zebu.uoregon.edu/astr121.html

CosmicVoyage Virtual museum and planetarium. Learn about cosmic evolution, from Big Bang to Humans. http://www.cosmicvoyage.org/

Internet Astronomy School (IAS) Designed as an online school for students from the 4th grade to the end of high school. Apart from the fact that students can study directly from their homes, this is intended to be used by science teachers within the framework of their science courses. http://www.yarden.ac.il/bloss/IAS/ehome.htm

Earth and Sky Home of the popular international science radio program Earth and Sky. http://www.earthsky.com/

Swinburne Astronomy Online degree granting program in astronomy offering courses for Master of Science and Graduate Diploma of Science. Based in Melbourne, Australia. http://www.swin.edu.au/astronomy/sao/

Windows to the Universe An extensive astronomical learning system. Articles available at three levels: beginner, intermediate, advanced. http://www.windows.ucar.edu/

Astronomy Trivia Java game that quizzes many different aspects of astronomy and astrophysics. http://www.triviazone66.com/trivia/astronomy/astronomy.htm

National Astronomy Education Projects An evolving list of those projects and programs in astronomy education to which anyone from around the U.S. can apply or from which anyone can receive materials. http://www.astrosociety.org/education/resources/naep.html

Walk the Solar System JavaScript calculator of sizes and distances of solar system bodies for making a scale model. http://www.exploratorium.edu/ronh/solar_system/

Journey into the Heavens From birth of the universe to our nine planets. http://library.thinkquest.org/28743/

Blossoms Of Science - Science Education Center An astronomy and education research group. The staff include researchers, teachers and teams working on courseware for science education. The site contains an on-line, interactive astronomy school. http://www.yarden.ac.il/bloss/newbloss/engbloss.htm

Astronomy 101 College-standard introductory course to astronomy from University of Santa Barbara, California. http://www.physics.ucsb.edu/~blaes/astro1/

A Journey into the Unknown A collection of web pages which detail the realm outside of our world: Outer space. These pages are designed primarily for teaching or as reference resources, but also contain some areas for entertainment. http://library.thinkquest.org/12272/

Heavenly Mathematics: Highlights of Cultural Astronomy An interdisciplinary course on cultural astronomy. The course has a goal of imparting an understanding of basic astronomical phenomena and an appreciation of their cultural significance throughout the world. http://www.math.nus.edu.sg/aslaksen/teaching/heavenly.shtml

Celestial Navigation Net Comprehensive, annotated hub site of resources relating to navigating by the stars, including theory, practice, history, instruments, and classroom links. http://www.celestialnavigation.net/

Astronomy at Grainger Observatory at Phillips Exeter Academy The latest information about the observatory, including classes, pictures, special events, student projects and patrons. http://observatory.exeter.edu/