RT Video/DVD DB /z-wcorg/ DS http://worldcat.org ID 45831754 LA English T1 Heaven and hell Blues for a red planet A1 Sagan, Carl,, KCET (Television station : Los Angeles, Calif.), Carl Sagan Productions., British Broadcasting Corporation., Television Service., Polytel International., PB Cosmos Studios PP Studio City, CA YR 2000 SN 0970351151 9780970351159 AB [Volume] IV : Host Carl Sagan describes the interaction of two processes, gradualism and catastrophism, which he maintains are responsible for the evolution of our universe, solar system, and even life on earth. Dr. Sagan discusses meteorites and comets, especially the Tunguska blast, and introduces the concept of comparative planetology. The theories of Velikovsky and other theories about the planet Venus are presented. [Volume] V : Reviews man's fascination with Mars and theories about the planet, notably those of Percival Lowell. Uses special effects, elaborate models and actual photographs relayed from Mariner and Viking probes. Discusses the advances in our knowledge of Mars since the times of Wells, Lowell, and Goddard. Speculates on the future.