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Image Credit: NASA

NASA Twin Study Finds - Human Heath can Sustain a Year in Space

NASA twin study's results suggest human health can sustain for a year in space. After spending 340 days in the ISS, astronaut Scott Kelly body changed from his weight to genes. The majority of changes that occurred in Kelly's body returned back to normal after he returned from ISS when compared to his twin brother Mark on Earth. This study is an important step towards understanding gene expression in human spaceflight.