Retired NASA astronaut and U.S. Air Force Maj. Gen. Joe Engle died July 10, surrounded by his family at home in Houston. Among his many honors, he is the only astronaut to pilot both the X-15 and space shuttle. He was 91. Engle became an astronaut at age 32 while flying the X-15 for the … Continue reading NASA Remembers Retired Astronaut, US Air Force Pilot Joe Engle