This book describes the history and the problem of planetary formation question in more complete and attractive detail. In an unusual but excellent feature, the basic physics needed at each stage is broken out into a long series of appendices, 39 in all. -- Contemporary Physics Contemporary Physics The first quarter of the presentation is a masterful summary of the history of the speculation about the origin of the sun and planets, a description of the properties of stars and star clusters, and an introduction to the exciting and developing field of exoplanets, objects that orbit distant stars. -- CHOICE CHOICE