As seen through a big telescope rather than by young lovers, the moon resembles a shell-battered World War I battleground. Clusters of craters are scattered across the satellite's cracked, rugged face like smallpox scars. Many are ringed by mountains up to 20,000 ft. high; some are more than 100 miles across and four miles deep. What caused these lunar markings? Astronomers advance two theories: the craters are 1) the shells of extinct volcanos, or 2) the result of meteorite bombardments some 4 billion years ago.
A radically new explanation is now offered by one...
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