Managed for NASA by the California Institute of Technology, JPL is the leading U.S. center for robotic exploration of the solar system.

Offers space, astronomy and technology content, including information, education, entertainment and business news.

On-line retailer of binoculars and monoculars, telescopes, spotting scopes, rifle scopes, opera glasses, laser sights, range finders, and night vision equipment. Located in Minnesota.

Aimed at portraying Earth and Space Sciences in a fun way. Includes information about space weather, global space physics and a real time movie of current solar activity.

Headline site featuring the latest in astronomy and space news.

Objective reviews for equipment and accessories submitted by astronomers, articles, classifieds, and forums.

Facts and statistical information about planets, moons, constellations, stars, galaxies, and Messier objects.

Currently the largest distributed computing effort with over 3 million users. Participate by running a screensaver program that downloads and analyzes radio telescope data. Includes project information, statistics, and forums.

Overview, sections dedicated to each planet and the smaller bodies - with data, information and some pictures - glossary and appendices.

Everything for the astronomer including news, classifieds, auctions, articles, forums, and a calendar.

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

Select images from NASA`s planetary exploration program.

Hubble Space Telescope News

Bring outer space online with the BBC Online`s guide to astronomy

Lots of time and date related information, such as yearly and monthly calendars, counters, countdown, and the world clock which shows the current time in cities all over the world.

A joint collaboration between the Harvard College Observatory (HCO) and the Smithsonian Astrophysical Observatory (SAO).

Daily archive of interesting astronomy photos by NASA.

Science news and information about the Sun-Earth environment.

A bilingual French/English educational website devoted to astronomy, amateur radio and connexed fields.

An unofficial archive of NOAA GOES solar data.

On-line Store with wide selection of brand name binoculars, monoculars, telescopes, spotting scopes, rifle scopes, opera glasses, laser sights, range finders, and night vision equipment. Located in Illinois.