Incoming Resources
- Exploring space, writer, Shawn Brennan
- Space robots, Ryan Nagelhout
- Space probes, exploring beyond Earth, David Jefferis
- The Illustrated encyclopedia of the universe, foreword by Sir Martin Rees ; general editor, Ian Ridpath
- Space probes, Robin Kerrod
- NASA planetary spacecraft, Galileo, Magellan, Pathfinder, and Voyager, Carmen Bredeson
- Awesome space robots, by Michael O'Hearn
- Explore space probes, Lola Schaefer
- Space probes, 50 years of exploration from Luna 1 to New Horizons, Philippe Séguéla
- Robonauts, by Allan Morey
- Robots in space, by Kathryn Clay