The "Space Explorer's Guides" are intended for children between the ages of 5-10. Beautiful photos and graphic illustrations of the planets and space are on every page. Information on each planet has been trimmed down to make the text as straight forward and easy to comprehend as possible. The author wants the reader to be engaged and excited about what they are reading, not bored by it. Every book ends with a question to encourage your child to continue learning about the subject.