5449961
9781429607339
In 2006, the International Astronomical Union officially defined the word planet, classifying Pluto as a dwarf planet. All text and diagrams in these up-to-date books reflect the change clearly and accessibly for your youngest readers. The Pluto title explains what a dwarf planet is. Stay current with these revised editions!Adamson, Thomas K. is the author of 'Saturn ', published 2007 under ISBN 9781429607339 and ISBN 1429607335.
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