National Space Society Library
- Sun Power: The Global Solution for the Coming Energy Crisis – complete online book by Ralph Nansen
- Space-Based Solar Power As an Opportunity for Strategic Security. Report to the National Security Space Office, October 2007
- Space Power – online book by G. Harry Stine
- NASA Space Solar Power DVD
- Satellite Power System Concept Development and Evaluation Program – a large set of the extensive Department of Energy/NASA studies from 1978 to 1981
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Planetary Defense Library – Resources on preventing the human race from becoming extinct from asteroid or comet impacts.
- Colonies in Space – complete online book by T. A. Heppenheimer
- Space Settlements – A Design Study (NASA Special Publication 413)
- Space Resources and Space Settlements (NASA Special Publication 428)
- NSS Space Settlement Journal
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- Access to Mars 2011 ISDC Presentation [PDF 2.3 MB]
- NASA Mars Reference Mission (Mars “Semi-Direct”) [PDF 2.3 MB]
- “Mars Direct” articles from Ad Astra
- Humans to Mars: Fifty Years of Mission Planning, 1950-2000 [PDF 2.4 MB]
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- Stephen Hawking on “Why We Should Go Into Space” – 25 minute video and transcript
- Mars Wars: The Rise and Fall of the Space Exploration Initiative
- The Space Shuttle Decision, by T. A. Heppenheimer
- Reaching for the High Frontier: The American Pro-Space Movement, 1972-84
- Pioneering the Space Frontier – Report of the National Commission on Space
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