Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet.
- ISBN10 0064450880
- ISBN13 9780064450881
- Publish Date 1 June 1989 (first published 1 December 1984)
- Publish Status Out of Print
- Out of Print 14 December 2022
- Imprint HarperCollins Publishers
- Format Paperback (US Trade)
- Language English