In the name of skill , former NASA astronautScott Kellyshoved himself into the top of a rocket , accelerated to 17,500 miles per hour , and fell around Earth for 340 days — nearly an entire year .
The lack of gravity , radiation vulnerability , Kelly ’s diet , and other facts of life story in orbit bear on his body in meaning ways — including , as NASA is learning now , even perhapshis genetic design .
TheTwin Study , which is still in procession , uses Scott Kelly ’s very twin brother and fellow former astronaut , Mark Kelly , to uncloak the subtle but crucial force of long - duration space travelling on the human body .
Here are eight biological oddities that researchers have found bechance to your body if you ’re in blank space for a twelvemonth .
Your face look different .
Your bone concentration can change .
Your body fluid shift .
Your sight could exchange .
Your musculus can atrophy .
You ’ll be sleepy .
Your cancer risk growth .
You get marvelous — until you get back to Earth .
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