Frank Carlson Library

The story of the young farm boy who became an astronomer and discovered the planet Pluto at the age of twenty-four.

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.