Space Colony (Popularity: )

Sims-style game to develop a space colony. Doesn't look terribly realistic, but cute...

SpaceColonyH (Popularity: )

A psychologically-based, problem-solving leadership game set in a space colony.

Terraforming (Popularity: )

Terraforming and ecogenesis from the astrobiology web.

The Greater Earth Manifesto (Popularity: )

A strong statement on the human space imperative by a group of European organizations.

The Space Policy Digest BBS Index Page (Popularity: )

Policy issues along with technology, in developing space.

Beanstalk elevator (Popularity: )

"Virtual beanstalk" amateur design group for a (small scale) space elevator.

Lifeboat Foundation (Popularity: )

Arguments why life on Earth may become extinct in the coming century, and a plan ...

Living Universe Foundation (Popularity: )

A grass roots movement dedicated to the future of space colonization and the spread of ...

Marshall T. Savage - An Exponentialist Assessment (Popularity: )

An article on Savage's treatment of the Malthusian population principle and our future as a ...

Martian Soil (Popularity: )

Daily weblog covering all the latest news in international Planet Mars exploration efforts.

Notable Nearby Stars (Popularity: )

Information about nearby star systems out to 65 light years.

PSRD: Moon's Dark, Icy Poles (Popularity: )

Information about permanently shadowed regions on the Moon, where frozen water could be trapped.

Space Solar Power Monitor (Popularity: )

News, discussion, links to latest information on SSP.

Space Solar Power Workshop (Popularity: )

Discussion of the energy path for space development.

Terraforming (Popularity: )

An article and 'hypermedia bibliography' of web pages on terraforming.

Terraforming - Michael Bastion (Popularity: )

Equations and resources on terraforming

The Economic Viability of Mars Colonization (Popularity: )

A paper by Robert Zubrin.

The Terraforming Information Pages (Popularity: )

Detailed information on terraforming, including some formal papers.

Totipotent.org (Popularity: )

How and why planet Earth is in position to "give birth" and spread life to ...

Cygo's Space Initiative (Popularity: )

Organization and forum focused on mining the asteroids.