Shannon Walker

Shannon Walker (born June 4, 1965) is an American physicist and a former NASA astronaut selected in 2004. She launched on her first mission into space on June 25, 2010, on board Soyuz TMA-19 and spent over 163 days in space. She returned to space for her second long-duration mission on November 15, 2020, on board SpaceX Crew-1, the first operational flight of SpaceX's Crew Dragon spacecraft.