The solar system most of us grew up with included nine planets, with Mercury closest to the sun and Pluto at the outer edge. Then, in 2005, astronomer Mike Brown made the discovery of a lifetime: a tenth planet, Eris, slightly bigger than Pluto. But instead of adding one more planet to our solar system, Brown’s find ignited a firestorm of controversy that culminated in the demotion of Pluto from real planet to the newly coined category of “dwarf”...

The birth and evolution of our solar system is a tantalizing mystery that may one day provide answers to the question of human origins. This book tells the remarkable story of how the celestial objects that make up the solar system arose from common beginnings billions of years ago, and how scientists and philosophers have sought to unravel this mystery down through the centuries, piecing together the clues that enabled them to deduce the solar system's...

This stellar book introduces kids to outer space through in-depth info and comic book adventure. Along the way, kids follow explorer Bethany Ehlmann, a member of the NASA Mars Rover Curiosity mission, and her lovable robo-dog, Rover, as they study and protect our amazing solar system.

By 1514, the reclusive cleric Nicolaus Copernicus had written and hand-copied an initial outline of his heliocentric theory-in which he defied common sense and received wisdom to place the sun, not the earth, at the center of our universe, and set the earth spinning among the other planets. Over the next two decades, Copernicus expanded his theory through hundreds of observations, while compiling in secret a book-length manuscript that tantalized

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Take a trip across Mars, find out what the weather is like on Jupiter, and visit the International Space Station. See how the planets move, learn about the asteroid belt, and read up on the history of astronomy. Discover once and for all why Pluto is a dwarf planet.

Takes readers on an interplanetary tour from the sun to the ever-mysterious Mars, and then, thanks to the Voyager missions, to the planets beyond.

Reach for the stars in the updated First Space Encyclopedia! Explore the planets and discover amazing facts about nearby galaxies. A delightful first reference book about space for young astronomers, First Space Encyclopedia takes readers on a journey through the universe, from the beginning of space itself to current space technology. Find out what it takes to be an astronaut, what it is like to live in space, and what they take with them in their...

Set to the tune of "Hush, Little Baby," this perfect bedtime picture book introduces children to the solar system while lulling them into a slumber filled with cosmic dreams.