Astronaut’s DNA no longer matches his twin, NASA study finds

WASHINGTON (WCMH) — Spending a year in space not only changes your outlook, it could change some of your genes.
NASA has learned astronaut Scott Kelly and his identical twin– astronaut Mark Kelly– are no longer genetically the same.
This was revealed in preliminary results from the space agency’s twins study, according to CNN.
According to researchers, 7 percent of Scott’s genes did not return to normal after his return to Earth two years ago.
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