Katie Presson is the Director of the International Space Station Payload Operations Integration Center (POIC) at NASAs Marshall Space Flight Center in .\rbr\rbrThe average International Space Station expedition lasts four to six months. Research enabled by the one-year mission will help scientists better understand .\rbr\rbrReal Martians host Amy Shira Teitel talks to Scott Kelly and Kjell Lindgren aboard the International Space Station about extended stays in space and how their .\rbr\rbr\rbr\rbrMackenzie Davis and Sebastian Stan, stars of 20th Century Foxs Film The Martian, got a tour from Johnson Space Center Director Ellen Ochoa. News media .