Going to Mars without setting up a colony -- round-trip manned missions, in other words -- would not be enough for the U.S. to reclaim its leadership in space, nor would setting up human outposts on the moon, Aldrin said.
Going to Mars without setting up a colony -- round-trip manned missions, in other words -- would not be enough for the U.S. to reclaim its leadership in space, nor would setting up human outposts on the moon, Aldrin said.
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