The moon is a Rosetta Stone of the planets.
—Robert Jastrow
UNCORRUPTED by the swirling gases of an atmosphere, unworn by the erosive pounding of wind and water, the moon has its history written plainly on its face. Geologically, its past and its present are as one, and clues to the events of billions of years are strewn across its surface with tantalizing clarity.
In the past five years, man has used the sophisticated instruments of the space age to learn more about the moon than he did during the 360...
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