Word: mandelshtam
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Dates: during 1972-1972
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...moon's surface, including the far side which is hidden from earth, and measured the solar wind, the constant streams of particles that flow away from the sun. His most important observation may well have been a visual one: he described large globs of material near the Crater Mandelshtam that provided scientists with the first evidence of ancient lava flows on the moon's far side...
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