Over forty authorities present sections on the nucleus, dust, coma, and tails of comets, along with sections on their origin, and relationships to other solar system bodies. . . . An excellent book.--Space News "The volume is highly recommended to all interested in comets and the Solar System."--Journal of the British Astronomical Association "A good representation of the studies that are currently being done on comets, and it is an extremely good source of information on a wide variety of topics."--International Comet Quarterly "Extremely well-written and informative. . . . A must for library collections."--The Observatory