No. of pages 192
This book is part of a book series called National Geographic Kids .
This book has been graded for interest at 10+ years.
There are 192 pages in this book. This book was published 2013 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.