G. Reid Wiseman served as Flight Engineer aboard the International Space Station for Expedition 41. During the 165-day mission, Wiseman and his crewmates spent hundreds of hours conducting valuable scientific research in areas such as human physiology, medicine, physical science, Earth science and astrophysics. They completed a record 82 hours of research in a single week. Wiseman also fostered a strong social media presence throughout his mission by sharing photos, personal tweets and short videos about life aboard the station. This was Wiseman’s first spaceflight, which also included almost 13 hours of spacewalking. Wiseman most recently served as the Chief of the Astronaut Office. Caption courtesy of NASA.