Added Mar 15 2018

‪New findings from NASA’s twin study of show that astronaut Scott Kelly’s 342 days aboard the International Space Station permanently altered his DNA from that of his identical twin brother, Mark.‬

Original article
Date published
March 15, 2018
    Scott Kelly Spent a Year in Space and Now His DNA Is Different From His Identical Twin's
    Scott Kelly, who spent a full year in space for NASA, is no longer an exact genetic match with his identical twin brother Mark Kelly.

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