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Impactful End For NASA’s Twin Grail Lunar Probes
December 19, 2012
NASA’s fuel-depleted Gravity Recovery and Interior Laboratory (Grail) A and B lunar mission probes slammed into a mountain near Goldschmidt crater at the Moon’s North Pole late Dec. 17, ending a one-year mission. The carefully targeted impact of the two washing machine-sized spacecraft, renamed Ebb...
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