Word: nonreturnable
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Dates: during 1969-1969
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Whenever the landing, the Mars expedition will be vastly different from the voyages to the moon. Unlike Apollo's nonreturn booster and lunar module, the vehicles that take men to Mars will be used on many voyages. "When a vehicle returns from Mars to earth orbit," said NASA Administrator Thomas O. Paine, "it will be left in earth orbit. After refueling, resupply, and providing a new crew, the vehicle would be ready to go again-back to Mars, to Venus, or on a shuttle run to the moon...
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