Mysteries of the planets /
Franklyn M. Branley ; diagrams by Sally J. Bensusen.
- New York : Dutton, 1988.
- 66 p. : ill.
- Mysteries of the universe series .
Includes bibliographical references.
Discusses the nine known planets of our solar system, their characteristics, and movements, as well as the possibilities of other undiscovered planets and extraterrestrial life.