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Mars Semi-Direct 1991
Part of American Mars Expeditions
Mars Direct
Mars Direct
Credit: NASA
American manned Mars expedition. Study 1991. Mars Semi-Direct was a NASA concept bridge between Zubrin's Mars Direct and NASA's Design Reference Mission 1.0. It was essentially a low-cost version of Boeing's STCAEM.

Status: Study 1991.

Mars Semi-Direct Mission Summary:



Family: Mars Expeditions. Country: USA. Agency: NASA. Bibliography: 1989.

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