General relativity is a more complicated topic to grasp than many others in physics. This book provides a good, basic introduction to the topic. However, kids and babies need not be discouraged. The concepts are still approachable, and the book offers good analogies to help explain them.

As a parent, you need to read this book with your child and be prepared to discuss the topics. This book is not the best first physics book for a baby. However, it is still an excellent introduction to the subject and can help get them interested in science.