International Space Settlement Design Competition
The International Space Settlement Design Competition for high school students is a world-wide contest for designing space colonies.
http://spaceset.org/

Starships and Space Colonies
Starships and Space Colonies
http://website.lineone.net/~geowood/

Tardigrades in Space
TARDIS, a research project evaluating the ability of tardigrades to survive in open space conditions.
http://tardigradesinspace.blogspot.com/

Tethers Unlimited, Inc.
Small business that designs, develops and builds space transportation systems using space tethers to transfer energy and momentum to payloads without the use of rocket propellant.
http://www.tethers.com/

Space Planning Board
Interior design tools for professionals. Now there's no reason to spend hours and hours drawing and re-drawing home furniture plans when The Board Space Planning Systems let you create high-quality furniture plans in minutes.
http://www.spaceplanning.com/

321 Space
Contains photographs from ground and space based sources including, the Hubble Space Telescope, Nasa, and the European Space Agency.
http://www.321space.com

Astrophysics and Space Sciences Transactions
Online version of a paper-printed peer-reviewed journal of the Copernicus Group. This open-access publication is dedicated to research in all fields of Astrophysics and Space Sciences.
http://www.astrophysics-and-space-sciences-transactions.net/

Space Wander
Fly to Mars and Jupiter! Travel through deep space! SpaceWander's award-winning multimedia space trip features real NASA images! Check out our space store for space book, space videos, telescopes, and NASA hats. You can even buy a REAL SPACE TRAVEL! SpaceWander's trip through the Universe features space pictures of Mars, Jupiter and Hubble images of stars, nebulae and galaxies.
http://www.spacewander.com

James Oberg's Pioneering Space
Provides article collection and research on the Russian and US space programs, Mir and the International Space Station, by an author of numerous books in the space domain.
http://jamesoberg.com

LEON2FT Notes
Functional SPARC compatible processor core. Fault tolerant version of LEON2, derived from LEON-1 integer unit, implemented as highly configurable, synthesizable VHDL model. Runs on Altera, Mietec, Temic MG2, Xilinx. Designed for outer space uses. Open source, GPL. European Space Agency, ESA.
http://microelectronics.esa.int/core/ipdoc/leon2ft_notes.txt