Ronald M. Sega
Ronald "Ron" Michael Sega is professor of systems engineering and Vice President for Energy and the Environment at the Colorado State University Research Foundation, a non-profit advocacy organization supporting CSU. He is also the Vice ...
James H. Newman
James Hansen Newman, Ph.D. is an American physicist and a former NASA astronaut who flew on four Space Shuttle missions.
William S. McArthur
William Surles McArthur Jr. is a retired United States Army colonel and NASA astronaut and a veteran of three Space Shuttle missions and one expedition to the International Space Station via the Russian Soyuz capsule.
Thomas David Jones
Thomas David Jones is a former United States astronaut. He was selected to the astronaut corps in 1990 and completed four space shuttle flights before retiring in 2001. He flew on STS-59 and STS-68 in 1994, STS-80 in 1996 and STS-98 in 2001. His ...
Nancy J. Currie-Gregg
Nancy Jane Currie-Gregg is an engineer, United States Army officer and a NASA astronaut. Currie-Gregg has served in the United States Army for over 22 years and holds the rank of colonel. With NASA, she has participated in four space shuttle ...
Michael R. Clifford
Michael Richard Uram "Rich" Clifford is a former United States Army officer and NASA astronaut. Clifford is considered a Master Army Aviator and has logged over 3,400 hours flying in a wide variety of fixed and rotary winged aircraft. ...
Daniel W. Bursch
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 ...
Charles J. Precourt
Charles Joseph Precourt is a retired NASA astronaut. His career in flight began at an early age, and spans his entire lifetime. He served in the US Air Force, piloted numerous jet aircraft, and piloted and commanded the Space Shuttle. Notably, he ...
William G. Gregory
William George "Borneo" Gregory is an American retired NASA astronaut and United States Air Force lieutenant colonel.
James S. Voss
James Shelton Voss is a retired United States Army Colonel and NASA astronaut. During his time with NASA, Voss flew in space five times on board the Space Shuttle and International Space Station. He also served as deputy of Flight Operations for ...
Bruce E. Melnick
Bruce Edward Melnick is a former American astronaut and retired United States Coast Guard officer. Following retirement from NASA and the Coast Guard, he entered the aerospace industry. He served as a Vice President with the Boeing Co.'s ...
Michael Foale
Colin Michael Foale CBE is a British-American astrophysicist and former NASA astronaut. He is a veteran of six space missions, and is the only NASA astronaut to have flown extended missions aboard both Mir and the International Space Station. He ...
Kenneth S. Reightler Jr.
Kenneth Stanley Reightler Jr. is a former NASA astronaut.
William F. Readdy
William Francis Readdy is a former Associate Administrator of the Office of Space Flight, at NASA Headquarters. He graduated from McLean High School, McLean, Virginia, in 1970 and received a Bachelor of Science degree in Aerospace Engineering ...
Donald R. McMonagle
Donald Ray McMonagle is a former astronaut and a veteran of three shuttle flights. He became the Manager, Launch Integration, at the Kennedy Space Center, Florida, on August 15, 1997. In this capacity he was responsible for final shuttle ...
Terrence W. Wilcutt
Terrence Wade Wilcutt is a United States Marine Corps officer and a NASA astronaut. He is a veteran of four Space Shuttle missions. Wilcutt is currently the Director of Safety and Mission Assurance, Johnson Space Center.
Kevin P. Chilton
Kevin Patrick "Chilli" Chilton is an American mechanical engineer, and former United States Air Force four-star General and test pilot. His last assignment was as Commander, U.S. Strategic Command from October 3, 2007 to January 28, ...
Ken Bowersox
Kenneth Dwane "Sox" Bowersox is a United States Navy officer, and a former NASA astronaut. He is a veteran of five Space Shuttle launches and an extended stay aboard the International Space Station. When he launched on STS-73 at the age ...
Andrew M. Allen
Andrew Michael "Andy" Allen is a retired American astronaut. A former Marine aviator and lieutenant colonel, he worked as a test pilot before joining NASA in 1987. He flew three Space Shuttle missions before retiring in 1997.
Pierre J. Thuot
Pierre Joseph Thuot is a retired United States Navy Captain and NASA astronaut. He went into space three times, spending over 650 hours in space, including over 15 hours in three space walks. He is a former U.S. record holder for time spent on ...
What is the difference between a cosmonaut and an astronaut?
Cosmonaut and astronaut are synonyms, that is, theoretically we can use them interchangeably, but traditionally we call people launched into space by the Americans astronauts and by the Russians cosmonauts, regardless of what nationalities they were. That is, Americans, Canadians, Japanese, Italians, French and Germans flying with Americans are astronauts. In contrast, General Hermaszewski, the only (so far) Pole in Space, is called a cosmonaut because he flew as part of the Soviet space program.
