Collection of forums for the amateur including gear and observing, astrophotography and imaging, review, classified ads, beginner's corner, and The Black Hole. http://www.astronomyforum.net
Forum for amateurs in and out of Chicago with categories such as space exploration, events and observations, and strange and unusual astronomy. http://astronomer.proboards23.com/
Against the mainstream, general, Martian chronicles, lunar conspiracies, bad TV and bad movies, the book, and Planet X. http://www.badastronomy.com/phpBB/
Public rooms include youth in astronomy, virtual telescope, SolNet solar observers, ICSTARS, southern skies, eclipse chasers, and starmaster. http://icstars.com/chat/
Space (sci.space) and astronomy (sci.astro) newsgroups with general (alt.astronomy), solar (alt.astronomy.solar), and UK astronomy (uk.sci.astronomy) news groups. http://www.spacebanter.com/
Astronomy, astro-physics, science, Black Hole Inn, news, sun and stars, paranormal, geology, particle physics, rocket science, and alternative science. http://www.aimoo.com/forum/freeboard.cfm?id=660221