What exactly is Pluto? What secrets does it possess?

People have been baffled, bewildered, and even outraged by the fact that Pluto is no longer called a planet. Who made this decision and why? If not a
planet, then what is Pluto? Through whimsical artwork and an entertaining story, Pluto's Secret introduces readers to this ever-popular icy world, from its discovery and naming to its recent reclassification. 

Published in association with the Smithsonian National Air and Space Museum, Pluto's Secret presents a fascinating look at how scientists organize and classily our solar system.  As they learn more about how it works and what types of things exist within it, scientists are constantly having to rethink how we see and understand things.

From the dust jacket