Other space forums

Thanks to SpaceNutNewMars (a user on the New Mars Forums, sorry I don't know your real name!) for telling me about most of these forums.

http://www.newmars.com/forums/

A lot of the forums I linked previously appear to have completely disappeared, so I'll delete them from the list above and look for new ones.

The apparently dead ones include:
marsdrive.com
bautforum.com
spaceref.com
space.co.uk

New Mars Forum still functions and has some activity on it.

Here's a new one that looks quite good:

http://www.spaceforum.com