New Mars Forums
- Mars Society Newsletter Online Forums
- http://www.newmars.com/forums/

Frontier Files Online || Opening the Space Frontier
- Relaunched community blog - space-related press releases, general developments on the space frontier.
- http://www.frontierfiles.org/

Selenian Boondocks
- Blog on new space companies and lunar colonization; the inside scoop on commercial space from Jonathan Goff and Ken Murphy.
- http://selenianboondocks.blogspot.com/

Out of the Cradle
- Blog chronicling the new space age: news, interviews, and reviews on all aspects of space development.
- http://www.outofthecradle.net/

Lunar News Network
- Blog on US space program focused on return to the Moon.
- http://eventhorizon.typepad.com/moon/

National Space Society Forums
- Forums focused on the NSS roadmap to space settlement, and activities of NSS chapters.
- http://www.nss.org/phpbb/

Artemis Project General Mailing List
- Discussion of return to the Moon. Moderated by leadership of Artemis Society International.
- http://www.asi.org/adb/09/03/artemis-list.html

HobbySpace
- Space log tracks developments in space commercialization particularly; occasional interviews and other newsworthy items.
- http://www.hobbyspace.com/index.html

Yahoo! Groups : GreenCELSSTaskFORCE
- Dedicated to creating self-sustaining closed-loop environments (only input: sunlight).
- http://groups.yahoo.com/group/GreenCELSSTaskFORCE/

Moon Society Yahoo group
- Open discussion group moderated by Moon Society leaders.
- http://groups.yahoo.com/group/moonsociety/

SpaceADG mailing list
- Space exploration science, history and current events. Focus is primarily on NASA space activities.
- http://groups.yahoo.com/group/SpaceADG/

Spacesettlers forum
- Mailing list for discussion of settling space.
- http://groups.yahoo.com/group/spacesettlers/

SSI_list
- Mailing list for the space studies institute (SSI) - general discussion of space development, space solar power, and O'Neill-style habitats.
- http://groups.yahoo.com/group/ssi_list/

Space-elevator forum
- Mailing list for discussion of space elevators, in theory and practice.
- http://groups.yahoo.com/group/space-elevator/

Space-architecture list
- Discussions on building things in space.
- http://groups.yahoo.com/group/space-architecture/

Artemis Project and Moon Society Meeting Server
- Chat system used by the Moon Society and Artemis project for online discussions - busy most evenings.
- http://www.asi.org/adb/09/08/04/moo.html

Dave Dietzler's BBS
- Kardashev levels, colonizing the asteroids and comets, general essays and discussion on space development and colonization.
- http://groups.msn.com/DaveDietzler/messageboard.msnw

RocketForge :: A Blog for the Space Age
- Amateur rocketry, the X prize, and our purpose in settling space.
- http://www.rocketforge.org/

Space Sciences -- HabitableZone
- Hot topics from the latest space missions, and where we should go next.
- http://www.habitablezone.com/space/