This book is part of a book series called Kingfisher Encyclopedias .

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

There are 160 pages in this book. This is a reference book. This book was published 2017 by Kingfisher .

Dr Mike Goldsmith works at the UK's National Physical Laboratory. He has worked on a variety of science topics, including sound and space. He has written several books for children.