A Journey into the Unknown [ Teens/Mature Teens ] - 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/

A Journey Through Space [ Kids/Teens/Mature Teens ] - Tells what different types of astronauts do, explores how space ships function, and traces the history of space travel. http://library.thinkquest.org/03oct/01253/

A Practical Guide to Astronomy [ Kids/Teens/Mature Teens ] - This electronic encyclopedia is a great resource for the both the beginner and the experienced backyard astronomer. Full of facts and photos. http://www.hotliquidmagma.com/

A Virtual Journey into the Universe [ Teens/Mature Teens ] - An information-rich interactive, educational tour of the Solar System. http://library.thinkquest.org/28327/

An Astronomy Course for Students Using the Internet [ Teens/Mature Teens ] - A course on astronomy designed for middle to high school students, but adaptable to most ages and interest levels. http://www.darkskyinstitute.org/astronomy.html

An Inquirer's Guide To The Universe [ Teens ] - Helps young people investigate planets and the universe. http://www.fi.edu/planets/planets.html

Are We Alone in the Universe [ Teens/Mature Teens ] - Discover some of the most intriguing UFO mysteries of this century, and possibly walk the path to becoming an astronaut to discover the vast corners of our universe. http://library.thinkquest.org/11272/

Astronomia Nova [ Mature Teens ] - The primary objective for the website is to ensure a foundation so the user can do astronomical / physical measurements and thereby take a step further than just actual knowledge. Main target group is highschool students. http://library.thinkquest.org/C0116544/

Astronomy and Space for Kids [ Kids/Teens ] - Stars, planets, black holes, Junior Astronomers Club. http://www.kidsastronomy.com/

Astronomy for Kids [ Kids ] - Basic introduction to astronomy for kids K-6 grade. http://www.frontiernet.net/~kidpower/astronomy.html

Astronomy for Kids [ Kids/Teens ] - Information on the planets, stars and other space-related topics, plus puzzles, maps and links to more astronomy sites. http://www.dustbunny.com/afk/

Astronomy in Questions and Answers [ Kids/Teens/Mature Teens ] - A comprehensive collection of simple facts about the planets, the solar system, meteors, stars, galaxies, and astronomers. http://www.astronomy.facts-on.com

Astronomy Jokes and Space Explorers [ Kids/Teens/Mature Teens ] - A collection of K-12 space and astronomy jokes with astronomy factoids, quizzes, quotes, links and pictures interspersed throughout the site describing history of astronomy and space exploration. http://www.juliantrubin.com/astronomyjokes.html

Astronomy with a Stick [ Kids/Teens ] - Daytime astronomy for elementary and middle school students. http://www.nsta.org/301

Beyond Our Skies [ Mature Teens ] - Discover what lies outside of what is known as Earth, by learning more about the sun, moon, and 'celestial objects'. http://library.thinkquest.org/29033/

Canadian Space Agency - KidSpace [ Kids/Teens/Mature Teens ] - Offers educational resources of interest to high schoolers and kids, with information on special projects, space playgrounds, and careers related to the study of space. http://www.space.gc.ca/asc/eng/kidspace/kidspace.asp

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 and space shuttles and rockets don't. http://www.geocities.com/mickey_prasad/astro.html

Constellation Stories and A Deepsky Atlas [ Teens/Mature Teens ] - Provides a listing of the constellations, maps, and the myths associated with them. http://www.hawastsoc.org/deepsky/index.html

Cosmic-Connection.com [ Teens/Mature Teens ] - Resource for amateur astronomers and space enthusiasts. Includes international launches, space news, photographs, and links. http://cosmic-connection.com

CosmicKids [ Kids/Teens ] - Learn all about the Hubble Space Telescope. http://sm3a.gsfc.nasa.gov/classrm.html