Discussions for general, telescopes, and equipment and accessories topics.

Gallery and personal albums, processing competition, reviews, and articles.

News and alerts, aerospace and science, history and culture, and general discussions.

Newsgroups with general, solar, and UK astronomy news groups.

Free newsletter, articles, discussion forum, lunar atlas, observing lists, and store.

Social networking site for astronomy educators and planetarium professionals.

International online community of amateur astronomers.

A forum for amateur astronomers to come together and discuss space science and astronomy.

Forum for all aspects of amateur Astronomy.

Discussion of telescope and accessories for owners and anyone considering using the ETX.

Announcements and news, equipment, astrophotography, specific equipment, observing, specialty, manufacturers, and galleries.

A multi-subject resource with worldwide membership via an interactive forum and website.

Against the mainstream, general, Martian chronicles, lunar conspiracies, bad TV and bad movies, the book, and Planet X.

Discuss the latest scientific discoveries in the areas of space exploration and aviation.

Members share thoughts on various equipment comparisons and brand names.

General, observing, imaging, equipment, news, clubs, and education.

Locating, identifying and alerting members to the most beautiful and interesting astronomical images on the Web.

Discussions on space, physics, news, and commercialization. Features projects and events.

Message boards to ask questions or offer advice.

Live conversation with people from all over the world.

Dedicated to the discussion of amateur astronomy, especially observing.

Discussions and questions with answers.