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"People, children especially, have been baffled, bewildered, and even outraged by the fact that Pluto is no longer called a planet. Through whimsical artwork and an entertaining dialog format, this book explains why this is so. Providing a history of the small, icy world from its discovery and naming to its recent reclassification, this book presents a fascinating look at how scientists organize and class our solar system as they gain new insights into how it works and what types of things exist within it. The book includes a glossary and bibliography"--