Has Piers Sellers or Hans Schlegel been on more Space Shuttle Missions?
Piers Sellers Piers John Sellers OBE (11 April 1955 – 23 December 2016) was a British-American meteorologist, NASA astronaut and Director of the Earth Science Division at NASA/GSFC. He was a veteran of three space shuttle missions.
Shuttle Landing Facility The Shuttle Landing Facility (SLF) (ICAO: KTTS, FAA LID: TTS) is an airport located on Merritt Island in Brevard County, Florida, USA. It is a part of the John F. Kennedy Space Center (KSC), and was used by NASA's Space Shuttle for landing until the program's end in 2011. It was also used for takeoffs and landings for NASA training jets such as the Shuttle Carrier Aircraft and for civilian aircraft.