Astronomy Communities
Communities for space enthusiasts covering astronomy, astrophysics, astrophotography, and space exploration. Discord servers host newcomers and experts alike with dedicated channels for launches, telescope recommendations, and trivia, alongside Reddit communities for sharing images and discussing discoveries.
Trending in Astronomy
Communities getting the most attention right now.

Cloudy Nights Forum
179,633 membersCloudy Nights Forum is dedicated to provide a forum where you can ask your questions or provide answers based on your experience, and perhaps most importantly, the site publishes reviews of astronomical scopes and equipment as written by experienced observers in the amateur astronomy community.

Spacecord
6,712 membersSpacecord is a Discord server dedicated to everything that has to do with space. Astronomy, astrophysics, cosmology, space travel, exploration, astrophotography, you name it we got it! We also post livestreams of launches and do trivias. Spacecord is for everyone interested in space, you don't necessarily need to be an expert.

Science and Technology
58,831 membersScience and Technology is a free Discord server that gathers scientists and science enthusiasts worldwide to discuss all things science. It has ten channels for different scientific fields. They are: astronomy, biology, chemistry, economics, engineering, environment, mathematics, physics, psychology, and technology.
All communities in Astronomy
Sorted by member count, largest first.
r/Astronomy
2,800,000 membersThe amateur hobby of humanity since the dawn of time and scientific study of celestial objects.

Cloudy Nights Forum
179,633 membersCloudy Nights Forum is dedicated to provide a forum where you can ask your questions or provide answers based on your experience, and perhaps most importantly, the site publishes reviews of astronomical scopes and equipment as written by experienced observers in the amateur astronomy community.

Stargazers Lounge
72,017 membersStargazers Lounge is one of the largest online astronomy forums on the Internet! Its members are diverse, come from all parts of the World and are very knowledgeable and helpful. Forum topics range from social “Astro-chat” to in-depth discussions on astrophotography equipment and processing, and everything in between.

Science and Technology
58,831 membersScience and Technology is a free Discord server that gathers scientists and science enthusiasts worldwide to discuss all things science. It has ten channels for different scientific fields. They are: astronomy, biology, chemistry, economics, engineering, environment, mathematics, physics, psychology, and technology.

Online Astronomy Society
18,200 membersWe are a society of amateur and professional astronomers.
Orbiter Forum
17,760 membersOrbiter Forum is the orbiter and space flight discussion board. The section is about astronomy news and discussions, astrophotography, telescopes, star charts, galaxies, stars, planets & moons, discuss it all here!

Astronomers
9,300 membersThis is an informal group intended for PROFESSIONAL astronomers. If we cannot determine if you are/were a professional astronomer, your membership request will be declined. Discussion topics should, in general, be focused on one or more of the following: astronomy & astrophysics, astronomy-related technology and instrumentation, science policy, professional issues, work environments, etc.

Space Nerds
9,296 membersHello and welcome to Space Nerds! Space Nerds is a general space community where you can come and talk about anything space, science, or technology related! If you're interested in anything science related and want to join a fun community and talk to others about nearly anything, this is the server for you.

Spacecord
6,712 membersSpacecord is a Discord server dedicated to everything that has to do with space. Astronomy, astrophysics, cosmology, space travel, exploration, astrophotography, you name it we got it! We also post livestreams of launches and do trivias. Spacecord is for everyone interested in space, you don't necessarily need to be an expert.

The British Astronomical Association Forum
2,700 membersThis is a place where all The British Astronomical Association members are welcome to post questions and exchange ideas with other members. If you have not yet joined the BAA, you are welcome to read any posts, but you may not join in the discussion. The BAA values freedom of expression and lively debate, but we have a few basic guidelines to ensure the discussion remains friendly and welcoming.

Cosmos Domain
1,561 membersWelcome to Cosmos Domain! We invite you to explore and learn with us! Join our server for various topics like math, physics, astronomy, biology, chemistry, and more STEM subjects!

The Polite and Friendly Amateur Astronomy Forum
1,077 membersWelcome to our friendly and polite astronomy forum! Please do introduce yourself and say hello! Beginners and experienced are welcome!

Colorado Springs Astronomical Society Forum
847 membersThe Colorado Springs Astronomical Society (CSASTRO) is a 501(c)(3) nonprofit organization of astronomy enthusiasts dedicated to the promotion and advancement of astronomy throughout Southern Colorado. Our membership is diverse in age, education, occupation, astronomical experience, and interests. Some members have formal training in astronomy, but many are beginners who seek to increase their understanding of the heavens.
Tucson Amateur Astronomy Association Forum is there to enable the exchange ideas about astronomy topics among the members of the TAAA. This site allows members to informally pose questions to the group, share observing targets or generally explore astronomy topics.

No advanced knowledge or equipment is necessary to become a member. If you have any kind of interest in astronomy, you’ve found the right group. Your membership with FWAS will also make you a member of the Astronomical League. New members: Be sure to join our members-only online forum and say hello!

Run by a committee drawn from the membership, the Orpington Astronomical Society has been an active association in Bromley since 1980. Originally founded in Orpington (hence the name) the Society has grown from a small group of enthusiasts into an established educational charity with close links to national bodies, including the Federation of Astronomical Societies and the Royal Observatory, Greenwich.

