Discusses the seventh planet, how it was named, and the information astronomers have gathered about it.
- ISBN10 0516011774
- ISBN13 9780516011776
- Publish Date 12 March 1999
- Publish Status Out of Print
- Out of Print 26 April 2021
- Publish Country US
- Imprint Children's Press(CT)
- Format Hardcover (Library Binding)
- Language English