NASA s 4 Year Twin Experiment Takes Us Closer To Mars Than Ever Before

Twin astronauts Scott and Mark Kelly participated in a groundbreaking NASA study to uncover the longterm effects of space on the human body. Over nearly a year, the twins took the same medical tests one while aboard the International Space Station and the other while back on Earth. The results, published in the journal Science, reveal that a year in space has considerable but not lifethreatening impacts on the human body, offering hope that a longerterm journey to Mars is, in fact, possible in the futu