Stephanie Diana Wilson (born 1966), American astronaut. Wilson studied aerospace engineering and worked for Martin Marietta (now Lockheed Martin). She was selected for the Astronaut Program at NASA in 1996, and selected for her first flight into space in 2006 on mission STS-121. Her second flight was mission STS-120 in 2007. She was a Mission Specialist on all three of her space flights, spending a total of 42 days in space. Wilson was Space Station Integration Branch Chief from 2010 to 2012. Wilson's third and final space flight was the STS-131 mission (5-20 April 2010).