Planet Quest -- [ Kids/Teens/Mature Teens ] - Includes on line quizzes, planet comparisons, pictures & links to astronomy clubs around the world. Visit

The International Astronomical Union (IAU) -- [ Teens/Mature Teens ] - Founded in 1919 to promote & safeguard the science of astronomy. The organization is also the internationally recognized authority for classifying celestial bodies & their surface features. Visit

Students for the Exploration & Development of Space -- [ Kids/Teens/Mature Teens ] - An international organization gives learning activities, information & news concerning space & its exploration. Includes photographs taken from spacecraft & the Hubble telescope. Visit

Space Detectives -- [ Teens/Mature Teens ] - Explore the mysteries & puzzles of the Solar System. Includes a quiz & interactive game to design a lander. Visit

Space & Astronomy -- [ Mature Teens ] - Instructional material on the solar system, including what lies outside the solar system. Also features event logs of a lunar eclipse. Visit

Federation of Galaxy Explorers -- [ Kids/Teens ] - Educates & inspires kids to pursue advanced studies in science & engineering. Mission is to prepare the next generation to explore & develop space. Visit

The Satellite Site -- [ Kids/Teens/Mature Teens ] - Tech Museum gives information on what satellites are, their uses, different types of orbits, the parts that make up a satellite & an interactive satellite construction tool (requries Java). Visit

Guide to Arctic Sunrise & Sunset -- [ Kids/Teens/Mature Teens ] - Tables of daily sunrise & sunset times in the Arctic. Learn about the Land of the Midnight Sun, Solstices, and Equinoxes. Visit

The Exploration of the Earth's Magnetosphere -- [ Teens/Mature Teens ] - Looks at the hot gases which fill most of space which are ruled by magnetic & electric forces rather than by gravity. The polar aurora, the radiation belts, the solar wind, magnetic storms, 'space weather', cosmic radiation--this is the site which tells you all about them. Visit

NASA Laboratory for Extraterrestrial Physics -- [ Teens/Mature Teens ] - Astronomy, chemistry, & physics of the solar system & beyond. Visit

Space Place Launch Pad -- [ Kids/Teens ] - Join this site in making some 'spacey' things. Also, view space science in action & discover some facts from gravity to telescope magnification. Visit

Space Educators Handbook -- [ Teens/Mature Teens ] - Don't let the title fool you… It is a great NASA list of space-related sites where you will have fun. Read Space Comics or find the Hidden Cool Stuff. Visit

Astronomia Nova -- [ Mature Teens ] - The primary objective for the website is to ensure a foundation so the user can do astronomical / physical measurements & thereby take a step further than just actual knowledge. Main target group is highschool students. Visit

Are We Alone in the Universe -- [ Teens/Mature Teens ] - Discover some of the most intriguing UFO mysteries of this century, & possibly walk the path to becoming an astronaut to discover the vast corners of our universe. Visit

From Mercury to Pluto -- [ Teens/Mature Teens ] - Information on planets, the universe at large, and exploration. Offers quizzes & interactive image galleries. Visit

Online Planetarium Show -- [ Teens/Mature Teens ] - Teaches fun & interesting lessons in astronomy & related subjects. Clear? Includes games, photo gallery, & lots of information on the Hubble Space Telescope. Visit

Common Teasers in Astronomy -- [ Kids ] - Contains a few brain teasers such as what keeps a satellite in orbit to why meteors burn up in the atmosphere & space shuttles & rockets don't. Visit

NASA Science Education -- [ Kids/Teens/Mature Teens ] - Resource for kids & space enthusiasts who are interested in meeting & learning about NASA people & the national space program. Visit