From the reviews of the first edition: "This book is a very comprehensive examination of all of the planets and main planetary moons of the Solar System with an emphasis on internal structure. ... the book is a very good starting point for anyone interested in the study of the solar system and in particular to geologists with such an interest." (Emlyn Jones, Astrology & Space, August, 2003) "David Harland is well known for his previous books ... . Those books were very popular due to their well-written and well-illustrated text, and this one is no different in those respects. ... The main readership to benefit from this book might be first-year undergraduates with an interest in planetary science ... . The main attraction of this book is the way it is written. It is extremely easy to read, making the progress of assimilating information a pleasure ... ." (Sarah Dunkin, The Observatory, Vol. 123 (1173), 2003)