Galaxies

Like an afternoon at the planetarium watching a sky show, this is a step-by-step introduction to and description of the many galaxies in the universe. Simon, the author of many science books, uses 20 color photographs, most of which are from the National Optical Astronomy Observatories, to accompany the text. He includes discussions of the ways in which astronomers classify galaxies, black holes, smaller satellite galaxies such as the Magellanic Clouds and supernovas. The terms are explained within the text; however, a glossary might have been a nice addition. As fascinating and accessible as this book is, with its straightforward writing, the concepts may be difficult to comprehend for some readers in the designated age group. They may gain more by sharing Simon's splendid work with adults or older siblings. Ages 4-8. (April)