NASA’s Twin Study Reveals the Effects of a Year in Space

https://www.extremetech.com/wp-content/uploads/2018/03/scott-kelly-selfie-768x424.jpg 768w, https://www.extremetech.com/wp-content/uploads/2018/03/scott-kelly-selfie-640x353.jpg 640w, https://www.extremetech.com/wp-content/uploads/2018/03/scott-kelly-selfie-106x59.jpg 106w, https://www.extremetech.com/wp-content/uploads/2018/03/scott-kelly-selfie-672x371.jpg 672w, https://www.extremetech.com/wp-content/uploads/2018/03/scott-kelly-selfie.jpg 1344w" sizes="(max-width: 300px) 100vw, 300px" /> Scientists have been studying the effects of long-term space habitation for decades, but astronaut Scott Kelly’s one-year stint aboard the International Space Station (ISS) afforded them a unique opportunity