This book is part of a book series called Fast Facts .

This book has been graded for interest at 7-11 years.

There are 32 pages in this book. This book was published 2016 by Kingfisher .

Professor Charles Taylor received the U. K. 's Bragg Medal and Prize of Institutional Physics, and the UK's Michael Faraday Award for contributions to the public understanding of science. He has presented lectures on BBC television and has written many science books for children.