What is a planet?
Subtitle: the story of Pluto
By: by Elaine Scott.
Publisher: Clarion Books
Published: 2007
Place of publication: New York
Language: eng
Number of pages: 43
ISBN-13: 9780618898329
Subjects: Pluto (Dwarf planet)
Description: On August 24, 2006, a group of astronomers made a big announcement: Pluto could no longer be considered a planet. This book explains how advancements in technology have changed our understanding of the universe--and exactly how and why the number of planets in our solar system went from nine to eight.
Table of contents: title: The planets we knew first; title: Some early astronomers; title: Ideas that work-and those that don't; title: Pluto's problems; title: Finding planets; title: What is a planet?