Nice quality binding, always appreciated in the priced non-fiction selection of books.  This science book explains how a solar and lunar eclipse occurs.  There is a section in the book which instructs the reader how to make their own model of an eclipse with a flashlight and ball and string.  Included is a glossary, other book recommendations, and a facthound website.  This reviewer explored all three sites and they were kid appropriate and had valuable information.  Recommended.