Aerospace Systems, Concepts, and Analysis - NASA's Langley Research Center in Hampton, Virginia. Includes organization, key personnel, mission, activities branches, and space-related bulletin boards.

Applied Technology Space and Satellite Training - Offers overview of courses provided in spacecraft design for engineers and scientists.

Astronautics and Spacecraft Design - Offers an aerospace professor's comprehensive and updated collection of spacecraft design links.

Communications Satellite Software - SATSOFT is used for communication satellite antenna design, analysis, and coverage planning. Quickly assess antenna coverage and gain, conduct antenna sizing studies, develop shaped beam and multibeam antenna designs, and perform other satellite payload engineering tasks.

Discovery Program Documents - Discovery guidelines and requirements documents. Good reference collection.

Drag-free satellites. - Experimental gravitational physics using drag-free satellites.

eclipse aerospace - Add-ons for orbiter space flight simulator created for educational purposes and includes spacecraft, satellites, interplanetary probes and surface bases. Also competing in the virtual x-prize.

GAO Space - Description of GAO Associates plus source of free code for space applications and support for aerospace.

JPL Part Reliability - Guidelines for parts selection and space reliability. COTS parts used in Space applications.

NASA Lessons Learned - NASA Lessons Learned Information System. Appears access is restricted to NASA and approved contractors.

NASA Parts Selection List - Provides catalogs and specifications for electrical, electronic, and electromechanical (EEE) parts to use in space systems.

The Radiation Environment - Radiation environment for space.

Rosetta Spacecraft Design - The Rosetta mission is an interplanetary mission whose main objective is to rendezvous with and make in-situ measurements of comet 46 P/Wirtanen. Design drivers and requirements.

Slate - Where Satellites Go When They Die - Describes the process of and planning for decommissioning and "parking" of geosynchronous satellites.

Small Satellites Home Page - Extensive collection of information on small satellites (nano-satellites and larger) and their uses.

Software Engineering and Standardisation Section, ESA - Provides documentation, tools and project news from the spacecraft software section of the European Space Agency.

Space Design Links - Links on satellite cost, thermal and environmental design.

Space Environment and Effects Section, ESA - Provides data and tools on radiation, debris and other effects on space systems in flight. Includes scientific articles and events.

Space Environment Links - Offers comprehensive directory.

Space Environments & Effects Program - NASA's space environment program. Features overview, news, flight experiments, mathematical models and publications.

Space Mechanical & Thermal Engineering Group - Design of space flight instruments, providing a range of services from conceptual studies to detailed design and analysis and the definition and management of tests.

Space War - Site exploring the past, present, and future of space warfare.

Spacecraft - Weblog for Discussion of Spacecraft Design, Dynamics and Control, and News.

Spacecraft Technology Center at Texas A&M University - STC promotes commercially funded engineering research and technology development using the International Space Station (ISS) or other orbiting platforms as a test bed for developing and validating advanced spacecraft technology.

SpaceWire UK - Design services for the space industry, focusing mainly on SpaceWire, the new communications standard adopted by ESA and NASA for future missions.

Starnav 1 experiment mission web site - Starnav 1 startracker experiment that flew on STS-107 Columbia mission.