New 1986 hardcover - Signed by Norman Bergrun with full color photos & illustrations. From photographs taken during the Voyager 1 flight to SATURN in 1980 the reader of this remarkable book sees that one of the photgraphs shows that the A-ring is incomplete.The author sets out to explain this phenomenon in an understandable form. The famous Cassini and Enke gaps also fit into the author's explanation. The micro photography employed by the Author answers many of the questions about Saturn asked since Galileo and the Author further shows a relation to the well defined crater on the earth's moon called 'Mare Orientale' and to the 1908 Tunguska catastrophe in the U.S.S.R. CREDENTIALS: Dr. Norman Bergrun is an alumnus of Ames Research Laboratory, NACA (National Advisory Committee for Aeronautics) predecessor of Ames Research Center, NASA where he worked twelve years as a research scientist. At Ames, he pioneered the setting of design criteria for airplane thermal ice-prevention and the developing of roll stability laws for airplanes, missiles and rockets. He joined Lockheed Missiles and Space Company (now Lockheed Martin) where he was manager of the planning and analysis of flight tests for the Navy Polaris Underwater Launch Missile System. During his thirteen years at Lockheed, he also served as a senior scientist having responsible analysis cognizance of special space-satellite applications. An Associate Fellow of the American Institute of Aeronautics and Astronauics (AIAA), he is active as a leader in Congressional Visits Day events on Capitol Hill. Credited with numerous awards and citations including the California Society of Professional Engineers Archimedes Engineering Achievement Award... he is listed in "Who's Who in America", "Who's Who in Science and Engineering", and other reference works. You can hear excerpts from this book quoted on Youtube: "James Horak on OhioExopolitics with Mark Snider, June 1st 2013" start listening at 11:00 minutes.