Scott Edward Parazynski, M.D. (b. July 28, 1961 in Little Rock, Arkansas) is an American physician and a former NASA astronaut. A veteran of five Space Shuttle flights and seven spacewalks, Parazynski's latest mission was STS-120 in October, 2007- highlighted by a dramatic, unplanned EVA to repair a live solar array. He retired from NASA in March 2009 to pursue opportunities in the private sector. He is the only person to have both flown in space and summited Mount Everest, the highest point on Earth.