First, Pluto left. Then it came back, along with Ceres and Eris...and now Haumea and MakeMake, too!

The recent actions of the International Astronomical Union have put every solar system book out of date. In response, National Geographic joins forces with David Aguilar of the Harvard Smithsonian Astronomical Observatory to revise our 2008 book-and to update young readers on the high-interest topic of space. Using simple text and spectacular photorealistic computer art by the author, this book profiles all 13 planets in their newly created categories-plus the sun, the Oort Cloud, comets, and other worlds being discovered. Back-of-the-book activities offer hands-on fun for budding astronomers.

This book was recognised in the Nonfiction category by the Garden State Award.

This book is part of a book series called Science And Nature .

This book has been graded for interest at 5-10 years.

There are 64 pages in this book. This book was published 2011 by National Geographic Kids .

David Aguilar is an astronomer, the former Director of Science Information at the Harvard Smithsonian Center for Astrophysics, and the author of Cosmic Catastrophes, Seven Wonders of the Solar System, and several popular children's books on space.