'… the book under review is a worthy and fitting update. It is a collection of 21 reviewed articles, written by the experts in the field. All are superbly illustrated and referenced. … This book is a tour de force which emphasizes the fact that not only are planetary rings one of the most beautiful phenomena in our subject they are also one of the most physically and dynamically challenging. … As with many planetary objects, we now know a lot but there is still a huge amount to find out. This book is a great encouragement to those starting out on the investigation.' David W. Hughes, The Observatory: A Review of Astronomy