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 dialogue format, Pluto’s Secret explains the true story of this distant world. 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 classify our solar system as they gain new insights in...

The scientific innovations of Galileo Galilei are pivotal to our understanding of the laws of the natural world. Drawing on his diverse studies in philosophy, mathematics, mechanics, music, astronomy, and engineering, Galileo developed revolutionary theories that thoroughly changed the disciplines of physics, mathematics, astronomy, and technology. Galileo Galilei traces the great scientist's education, describes his maverick experiments in Padua and Pisa, and recreates the ingeni...

It was once thought that our solar system ended at Saturn. Then the first telescopes revealed Uranus and Neptune. Differences in the calculations of the gravity of these giants set off another search and Pluto was discovered.Pluto was then thought to be the last planet of our solar system. Beyond it was empty space – until astronomers started looking at comets.Huge balls of ice, zipping through the solar system, past the planets, around the sun and back out again. Where did t...

Outer space and its characteristics are discussed and identified throughout this book. The most up-to-date information from current research is provided.