UIC: Nuclear Reactors for Space
- Briefing paper from the Uranium Information Center (UIC) addressing the different applications of fission reactors and decay heat sources used in space so far.
- http://www.uic.com.au/nip82.htm

Space Exploration Nuclear Propulsion
- Discusses the scientific aspects of nuclear propulsion in space. Includes technical concepts, technology basics with schematic diagrams, history and topical interviews with scientists and astronauts.
- http://www.astrodigital.org/space/nuclear.html

Small-Sized Space Nuclear Power System
- Compact power source developed at the Kurchatov Institute around a nuclear reactor and a thermionic heat-to-electricity converter for space power systems applications. Includes technical characteristics and contact information.
- http://www.kiae.ru/eng/inf/tex/t6.html

Nuclear Thermal Propulsion
- Information resources on space nuclear propulsion, space policy and other nuclear related topics by the Federation of American Scientists. Includes space policy, technical, strategic defense and space exploration information.
- http://www.fas.org/nuke/space/

NuclearSpace
- Pro-nuclear space movement providing news coverage, editorials and articles about the use of nuclear energy in space research and exploration. Includes message board and discussion forum.
- http://www.nuclearspace.com

Will Nuclear Power Put Humans On Mars
- Article on the history and possible future applications of nuclear power in space.
- http://www.space.com/scienceastronomy/solarsystem/nuclearmars_000521.html

INSPI - Innovative Nuclear Space Power and Propulsion Institute
- Institute of the University of Florida conducting research in space nuclear energy systems, high temperature nuclear fuels and propulsion. Includes research information, nuclear data and location.
- http://www.inspi.ufl.edu/