NBC: My brother Scott just hit the halfway point of his #YearInSpace

This week, my twin brother Scott Kelly reached a milestone: the halfway point in his nearly year-long mission aboard the International Space Station. For 173 days (as of my writing), Scott has served our country in zero gravity, floating inside the International Space Station as it orbits 250 miles above our planet at 17,500 miles per hour, far away from his family and friends. On this flight alone, he has already traveled 72 million miles around Earth.


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