Astronomy
Space Exploration
Extra Terrestrials

Astronomy

Astrobiology Web SpaceWeb.com created this site and it is a good introduction to a relatively new field of study.
www.astrobiology.com

Cambridge Relativity This Cambridge University site is dedicated to the study of black holes. It contains a link to Stephen Hawking’s home page.
www.damtp.cam.ac.uk/user/gr/public

Earth and Moon Viewer This site is produced by John Walker of Fourmilab in Switzerland. It contains images of the earth from the moon and from satellites.
www.fourmilab.to/earthview

Extrasolar Planets Encyclopedia This Internet site is dedicated to providing news and information on planets outside our solar system.
http://cfa-www.harvard.edu/planets

IMO: the International Meteor Organization. This site is produced by the American Meteor Society, whose mission is to promote cooperation between amateur meteor observers around the world.
www.imo.org

Nine Planets: a multimedia tour of the solar system.
http://seds.lpl.arizona.edu

SEDS Messier Database (SEDS = Students for the Exploration and Development of Space) This is a guide to the 110 objects in the standard Messier catalog, including nebulae, star clusters, and galaxies. www.seds.org/messier

Sky and Telescope Astronomy Directory: a directory of astronomy-related organizations. It includes more than 3000 museums, planetariums, clubs, and observatories in the United States. www.skypub.com

Star Date Online This is the official web site for the 20-year radio show "Star Date." It includes daily astronomical events for the year and archives of the radio show.
http://www.stardate.org

Views of the Solar System "A well-crafted site containing high resolution images of the planets, moons, meteors, and comets."
www.solarviews.com

Space Exploration

Encyclopedia Astronautica This site is sponsored by Friends and Partners in Space, a non-profit organization which hopes to improve communication and cooperation between the West and Russia. It contains information about US, Soviet, Chinese, Japanese and European astronautics.
http://www.astronautix.com/

National Aeronautics and Space Administration This popular site is produced by all fourteen of the NASA's branches. It has information on space-related fields such as astronomy, geoscience, and aerospace technology.
www.nasa.gov

Extra Terrestrials

SETI Institute Online (Search for Extra Terrestrials) The Mission of SETI is to explore, understand and explain the origin, nature, prevalence and distribution of life in the universe.
www.seti-inst.edu