This book is part of a book series called Ultimate Guide .

This book has been graded for interest at 8+ years.

There are 64 pages in this book. This book was published 2009 by Silver Dolphin Books .

John Farndon has written many books for children, specialising in popular science and astronomy. He has twice been shortlisted for the "Copus Science Book Prize. " Barbara Taylor is an experienced children's non-fiction writer. Her previous books for Watts include the Science Starters series.