Extensively revised and updated, this new edition of David A. Rothery's acclaimed geological guide to the outer solar system includes results and close-up color and black and white images from both the 1995-1999 Galileo mission to Jupiter and the Voyager space probe. Rothery, a noted planetaryscientist, explains the geological aspects of the major satellites of the outer planets, from Jupiter to Neptune and the Pluto-Charon system. In particular he shows how tectonic and volcanic processes, driven by heat from within, have shaped the rigid outer layers of these worlds. Rothery alsodiscusses the similarities and differences among them and the ways in which they resemble Earth-like planets. This fascinating book is written in an introductory style ideal for first- or second-year college courses. Amateur geologists and astronomers will also find its insights rewarding.