Human space missions to Mars are the next great leap in space exploration, with NASA targeting the 2030s as a reasonable time frame for taking the first humans there. But boarding on a journey to Mars is not like catching a flight to New York. Space is an extremely hostile environment for human life – from the lack of gravity and harmful radiation to isolation and the absence of night and day. Deep space missions to Mars will be much more physically and mentally demanding than the journeys we’ve made so far during 60 years of human space exploration. A…
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