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/

Astronomy Today

An online news and information site devotes to bring knowledge of astronomy to everybody. DVDs about space, photographs of the planets, interviews with scientists and advice on buying telescopes can all be found here. The site's forum permits users to share their ideas on astronomical subjects.

http://www.astronomytoday.com/

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

Astrobiology: NASA

NASA's website on astrobiology provides the public with access to a great fund of knowledge on the intersection of astronomy and biology. Also provides a special section for students interested in this subject and an "ask an astrobiologist" feature where members of the public can send their questions to NASA experts.

http://astrobiology.arc.nasa.gov/

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/

Astronomical Applications Department: US Naval Observatory

The astronomical applications department of the US Naval Observatory offers a wide variety of information on astronomy. A wealth of astronomical data is provided, including celestial navigation data, as well as astronomy software on CDs. Information on sunrise and sunset data for 22,000 US cities and other locations worldwide can also be found here.

http://aa.usno.navy.mil/

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/

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://www.nasm.si.edu/

Gateway to Astronaut Photography

The Gateway to Astronaut Photography of Earth is a website organized by NASA. The site contains more than 300,000 images taken from space of Earth. This large database of images includes many of the world's cities and other sites of interest. The site is a great resource for those interested in geography and space.

http://city.jsc.nasa.gov/

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://cfa-www.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://cisto.gsfc.nasa.gov/

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/

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.aerospacemuseum.org/

Department of Astronomy: University of Virginia

An academic department involved in teaching and researching all aspects of the cosmos. The department's list of recent events include announcements of scientific discoveries and the accomplishments of department members. Most of the information will be of interest to present students and faculty, but there are also some events designed for the general public.

http://www.astro.virginia.edu/

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/

About Space

Science and astronomy information provided by the About.com reference website. It has information on stars, planets, galaxies and missions to space. You can also read biographies of the people who have played a role in expanding our knowledge of the stars.

http://space.about.com/