Balettie, Roger
Former NASA Flight Dynamics Officer providing memoirs on mission control, manned space missions, essays, interviews, and space directory.
Brian's Space Hotlist
Provides a comprehensive directory for a wide spectrum of space issues, well organized by topics.
Gordon's Space Site
Provides an article collection and directory by a space enthusiast.
Lindsey, Clark S.
Provides comprehensive directory with separate sections on amsats, satellite observing, collecting, and space tourism. Frequently updated.
Rocket and Space Technology
Offers a comprehensive introduction to the basics of most of space technology by a space enthusiast.
Satellite Database
Features a space enthusiast's downloadable directory of launched objects.
Sven's Space Place
Provides a resource for space history, radio tracking and technology by a space enthusiast. Frequently updated.
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