"Planetary Ring Systems is the most comprehensive book to date on a subject which has fascinated astronomers since Galileo's observations in 1610 led to the discovery of Saturn's ring system. It looks at all the major planets, charting the discovery of the ring systems of Saturn, Uranus, Jupiter and Neptune and then presenting our present-day knowledge of these systems." "This book includes detailed and quantitative observations from the international Cassini Orbiter, whose multi-year Saturn orbital tour began in 2004; its pages contain a wealth of data and superb images of all four planetary ring systems."--Jacket.