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Cover: An artist’s impression of the European Space Agency’s Huygens probe sitting in an apparent floodplain of icy pebbles soon after its successful landing on the surface of Saturn’s giant moon, Titan, on January 14, 2005. Data from Huygens and its companion, the Cassini orbiter, have provided new insights into the degree of chemical complexity that can arise from 4.5 billion years of planetary evolution in an environment rich in organic compounds. Image courtesy of the European Space Agency.
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International Standard Book Number-10 0-309-10235-9
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