Here's a list of some interesting space-related links:
American Institute of Aeronautics and Astronautics
Apollo pictures
Astroid Database
Atlas of Mars
CDF (Concurrent Design Facility at ESTEC)
Delta-Utec Space Research and Consultancy
Dutch Aerospace engineering faculty
Dutch-Space homepage
ESA homepage
ESTEC homepage
Genetic Algorithm Source Codes
Genetic Programming
Houston Space Society, Inc.
Hubble Space Telescope
International Space University
Lloyd's Satellite
Constellations
Lunar Resources Company
LunarSat homepage
NASA homepage
NASA Spacelink
New Scientist
PERMANENT
Project HALO (High Altitude Lift Off)
Russian Space Science Institute
Screensavers from Fourmilab
Sea Launch
SPACE FAQs and other Documentation
Space Pinball homepage
Space Tour/Third Millenium Aerospace
SpaceDev
Stardust launch
Student Space Awareness
Students for the Exploration and Development of Space
(SEDS)
Surrey Satellite Technology Limited (SSTL)
TEAMSAT homepage
The Experimental Aircraft Association
The Experimental Rocket Propulsion Society (ERPS)
The Space Engineering Research Center for
Utilization of Local Planetary Resources
The Space Frontier Foundation
Universities Space Research Association
Viking image archive
Webcams at launchpads
X-33 Home for Space
Activists