Adler Planetarium

The Adler Planetarim and Astronomy Museum, based in Chicago, is dedicated to promoting interest in astronomy and providing public education with an extensive course of lectures, education programs and other activities. The site's Space Science Online section has fascinating information about recent astronomical discoveries and information on sky watching.

http://www.adlerplanetarium.org/

NASA.gov

Find out about the Mars Reconnaisance Orbiter. View the latest images from Mars, videos, podcasts and more.

http://www.nasa.gov/mission_pages/MRO/main/index.html

Encyclopedia Astronautica

A free Internet encyclopedia covering all aspects of space science, technology, history and more. The site's image directory, biographies of astronauts and descriptions of space vehicles are useful as a quick reference for those doing homework projects on space.

http://www.astronautix.com/

Inconstant Moon

A website that is devoted to providing information about the moon, the most readily observable astronomical object. You can browse the site's Cyclopedia for articles on the moon and find atlases of the lunar surface. There is also a bookstore for those who want to keep learning about the moon.

http://www.inconstantmoon.com/

Astronomy: New Mexico State University

The Department of Astronomy at the New Mexico University provides information for students, researchers and members of the general public interested in astronomy. Also offers information about department-sponsored academic and social events, as well as conferences.

http://astronomy.nmsu.edu/

Caltech Astronomy Department

The Caltech Observatory is a website supported by the Caltech Astronomy Department, based in California. Provides information on the department's research activities, as well as notices about upcoming events of interest to astronomy experts and enthusiasts.

http://www.astro.caltech.edu/

Near Earth Object Program: NASA

Provides statistics and information relating to NEOs, near-earth objects such as comets and asteroids that have entered the earth’s neighborhood. Sitelinks to fascinating information pertaining to the solar system, earth, stars and galaxies, science and technology.

http://neo.jpl.nasa.gov/

Smithsonian Institute

This is the official website of the National Air and Space Museum. Find out about upcoming events at the museum, subscribe to their e-newsletter, find out about donating money, information about visiting the museum and more.

http://airandspace.si.edu/

Harvard-Smithsonian Center for Astrophysics

The Harvard-Smithsonian Center for Astrophysics is a collaborative research project between Harvard University and the Smithsonian Institution. The Center conducts research into cosmology, the solar system and stars as well as laboratory-based research. The site's Education section has special pages for educators to use as well as the general public.

http://www.cfa.harvard.edu/

Computational and Information Sciences and Technology Office (CISTO)

CISTO of NASA supports the American space agency's computing and technology requirements. CISTO also operates research programs using high speed computers to undertake scientific research into the Earth and related subjects.

http://science.gsfc.nasa.gov/sed/index.cfm?fuseAction=home.main&&navOrgCode=606

San Diego Air & Space Museum

California's premier museum for artifacts on aviation history and space exploration. The Museum's Online Photo Store provides a convenient method of purchasing images of some of the world's most interesting aircraft. Visitors can also sign up for the museum's e-newsletter to keep appraised of the latest developments.

http://www.sandiegoairandspace.org/

Astronomy Magazine

Online edition of a magazine dedicated to astronomy and science news. There is a great section here for astronomy novices, with advice on equipment, a glossary of terms and an introduction for children. The astronomical community is also out in force here with information on community events, forums and more.

http://www.astronomy.com/

Space.com

Provides scientific information about outer space and details on NASA's activities. You can also read information on the technology being developed to better understand space. The site has space related news articles to keep you informed about the latest discoveries.

http://www.space.com/

SpaceWeather.com

An information website on "weather" in the Solar System. There is information on current solar winds and solar flares. You can also find out what the International Space Station is currently doing. Space enthusiasts will appreciate the ability to submit photos to the site.

http://www.spaceweather.com/

Space Telescope Science Institute

The STScI, based in the United States, provides a number of astronomical surveys and catalogs that include objects like galaxies and stars. You can find a gallery of space images taken by the Hubble Space Telescope.

http://www.stsci.edu/

The Astronomer

The Astronomer, a longstanding monthly publication, offers articles, news and events on astronomy. There is a large section devoted to astronomical observations including meteors, minor planets and supernovae. You can also view images of comets, eclipses and more.

http://www.theastronomer.org/