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The idea of humans living on Mars is closer to reality than it’s ever been. On Feb. 13, Elon Musk’s SpaceX ferried an international crew of four astronauts to the International Space Station, another ...
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10 reasons humans still aren’t on Mars
Elon Musk has repeatedly said he plans to put humans on Mars, yet the gap between that vision and reality remains wide. The obstacles are not just about rockets or money, but about biology, psychology ...
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