Books
- (Planets for Man. 1964. With Stephen H. Dole)
- The Universe. 1966
- The Stars in Their Courses. 1971
- Biographical Enclyopedia of Science and Technology: revised edition. 1972
- The Biological Sciences. 1972
- The Left Hand of the Electron. 1972
- The Physical Sciences. 1972
- The Tragedy of the Moon. 1972
- Asimov on Astronomy. 1974
- Towards Tomorrow. 1974
- The Planet that Wasn't. 1976
- The Collapsing Universe. 1977
- Extraterrestrial Civilisations. 1979
- In the Beginning. 1981
- Counting the Eons. 1983
- (The Roving Mind. 1983)
Other information