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.
- ISBN10 0525672400
- ISBN13 9780525672401
- Publish Date 30 August 1988 (first published 1 January 1985)
- Publish Status Out of Print
- Out of Print 21 July 2021
- Publish Country US
- Imprint Penguin Books Ltd
- Format Hardcover
- Language English