John Howard Casper is a former American astronaut and retired United States Air Force pilot.
STS-41-C was NASA's eleventh Space Shuttle mission, and the fifth mission of Space Shuttle Challenger. The launch, which took place on April 6, 1984, marked the first direct ascent trajectory for a Space Shuttle mission. During the mission, Challenger's crew captured and repaired the malfunctioning Solar Maximum Mission satellite, and deployed the Long Duration Exposure Facility (LDEF) experimental apparatus. STS-41-C was extended one day due to problems capturing the Solar Max satellite, and the landing on April 13, 1984, took place at Edwards Air Force Base, instead of at Kennedy Space Center as had been planned. The flight was originally numbered STS-13.
James Donald "Wxb" Wetherbee, is a retired United States Navy officer and aviator, test pilot, aerospace engineer, and NASA astronaut. He is a veteran of six Space Shuttle missions and is the only American to have commanded five spaceflight missions.
Kenneth Dale "Taco" Cockrell is a retired American astronaut, engineer and a veteran of five Space Shuttle missions. He served as Chief of the Astronaut Office from 1997 to 1998.
Richard Oswalt Covey is a retired United States Air Force officer, former NASA astronaut, and a member of the United States Astronaut Hall of Fame.
John McCreary Fabian is a former NASA astronaut and Air Force officer who flew two Space Shuttle missions and worked on the development of the Shuttle's robotic arm. He later led the Air Force's space operations.
Daniel Charles Brandenstein is the Executive Vice President and Chief Operating Officer of United Space Alliance. He is a former Naval Aviator, test pilot and NASA astronaut, who flew four Space Shuttle missions. He also served as Chief of the Astronaut Office from 1987 to 1992.
George Driver "Pinky" Nelson is an American physicist, astronomer, science educator, and retired NASA astronaut.
James Dougal Adrianus "Ox" van Hoften is an American civil and hydraulic engineer, retired U.S. Navy officer and aviator, and a former astronaut for NASA.
John Elmer Blaha is a retired United States Air Force colonel and a former NASA astronaut. He is a veteran of five space missions aboard the Space Shuttle and Mir.
David Mathieson Walker, , was an American naval officer and aviator, fighter pilot, test pilot, and a former NASA astronaut. He flew aboard four Space Shuttle missions in the 1980s and 1990s.
Daniel Wheeler Bursch is a former NASA astronaut, and Captain of the United States Navy. He had four spaceflights, the first three of which were Space Shuttle missions lasting 10 to 11 days each. His fourth and final spaceflight was a long-duration stay aboard the International Space Station as a crew member of Expedition 4, which lasted from December 2001 to June 2002. This 196-day mission set a new record for the longest duration spaceflight for an American astronaut, a record simultaneously set with his crew mate Carl Walz. Their record has since been broken, and as of 2016 it is held by Scott Kelly, who flew a 340-day mission during Expeditions 43, 44 and 45.
Ronald John Grabe, , is a former NASA astronaut.
Frederick Drew Gregory is a former United States Air Force pilot, military engineer, test pilot, and NASA astronaut as well as former NASA Deputy Administrator. He also served briefly as NASA Acting Administrator in early 2005, covering the period between the departure of Sean O'Keefe and the swearing in of Michael D. Griffin.
Lloyd Blaine Hammond Jr. is a Gulfstream test pilot, a former United States Air Force officer, and a former NASA astronaut. He flew on two Space Shuttle missions.
George David Low was an American aerospace executive and a NASA astronaut. With undergraduate degrees in physics and mechanical engineering and a master's degree in aeronautics and astronautics, he worked in the Jet Propulsion Laboratory (JPL) at the California Institute of Technology in the early 80's, before being picked as an astronaut candidate by NASA in 1984. In addition to holding some technical assignments, he logged more than 700 hours in space, before he left NASA in 1996 to pursue a career in the private sector. He was the son of George M. Low, the manager of the Apollo Spacecraft Program Office, and later, the 14th president of Rensselaer Polytechnic Institute.
Steven Ray Nagel, , was an American astronaut, aeronautical and mechanical engineer, test pilot, and a United States Air Force pilot. In total, he logged 723 hours in space. After NASA, he worked at the University of Missouri College of Engineering as an instructor in its Mechanical and Aerospace Engineering Department.
Mark Lewis "Roman" Polansky is an American aerospace engineer and research pilot and a former NASA astronaut. Polansky received the nickname "Roman" as a joke, because he shares a last name with director Roman Polanski. He flew on three Space Shuttle missions: STS-98, STS-116, and STS-127 and was first person of Korean ancestry in space.
Rex Joseph Walheim is a retired United States Air Force officer, engineer and NASA astronaut. He flew three Space Shuttle missions, STS-110, STS-122, and STS-135. Walheim logged over 566 hours in space, including 36 hours and 23 minutes of spacewalk (EVA) time. He was assigned as mission specialist and flight engineer on STS-135, the final Space Shuttle mission.
Carl Erwin Walz is a retired NASA astronaut currently working for Orbital Sciences Corporation's Advanced Programs Group as vice president for Human Space Flight Operations. Walz was formerly assigned to the Exploration Systems Mission Directorate at NASA Headquarters in Washington, D.C. He was the Acting Director for the Advanced Capabilities Division in the Exploration Systems Mission Directorate, and was responsible for a broad range of activities to include Human Research, Technology Development, Nuclear Power and Propulsion and the Lunar Robotic Exploration Programs to support the Vision for Space Exploration.
