Naoko Yamazaki is a Japanese engineer and former astronaut at JAXA. She was the second Japanese woman to fly in space. The first was Chiaki Mukai.
Andrew "Andy" Sydney Withiel Thomas, AO is an Australian and American aerospace engineer and a former NASA astronaut. He has dual nationality; he became a U.S. citizen in December 1986, hoping to gain entry to NASA's astronaut program. He is married to fellow NASA astronaut Shannon Walker.
John Bennett Herrington is a retired United States Naval Aviator, engineer and former NASA astronaut. In 2002, Herrington became the first enrolled member of a Native American tribe to fly in space.
Michael James Massimino is an American professor of mechanical engineering at Columbia University and a former NASA astronaut. He is the senior advisor of space programs at the Intrepid Sea, Air & Space Museum.
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.
Gregory Carl "Ray J" Johnson, , is a retired American naval officer and naval aviator, test pilot, aerospace engineer, and NASA astronaut. He spent his military career in both the regular United States Navy and the Navy Reserve. Johnson was the pilot on Space Shuttle mission STS-125, the final Hubble Space Telescope servicing mission.
Thomas Henry Marshburn is an American physician and a former NASA astronaut. He is a veteran of three spaceflights to the International Space Station and holds the record for the oldest person to perform a spacewalk at 61 years old.
Akihiko Hoshide is a Japanese engineer, JAXA astronaut, and former commander of the International Space Station. On August 30, 2012, Hoshide became the third Japanese astronaut to walk in space.
Robert Louis Behnken is an American engineer, a former NASA astronaut, and former Chief of the Astronaut Office.
Livingston L. Holder Jr. is a former USAF astronaut in the Manned Spaceflight Engineer Program during the mid-1980s. He was assigned to fly as a military payload specialist on the Space Shuttle, but could not fly in space due to the Challenger accident in 1986.
Jeanette Jo Epps is an American aerospace engineer and NASA astronaut. Epps received both her M. S. and Ph.D. degrees in aerospace engineering from the University of Maryland, where she was part of the rotor-craft research group and was a NASA GSRP Fellow. She was chosen for the 20th class of NASA astronauts in 2009, graduating in 2011. Epps currently serves as a member of the ISS Operations Branch and has completed analog astronaut missions, including NEEMO 18 and CAVES 19. She is the second woman and first African-American woman to have participated in CAVES. She has been selected to fly to the ISS in early 2024 as part of the SpaceX Crew-8 crew.
Michael Scott Hopkins is a United States Space Force colonel and a former NASA astronaut.Hopkins was selected in June 2009 as a member of the NASA Astronaut Group 20. He made his first spaceflight as a Flight Engineer on Soyuz TMA-10M/Expedition 37/Expedition 38, from September 2013 until March 2014. He is the first member of his astronaut class to fly in space. Hopkins is the first astronaut to transfer to the U.S. Space Force, participating in a transfer ceremony on the International Space Station. Prior to his transfer, he served over 27 years in the United States Air Force.
In 2011 NASA opened applications for Astronaut Group 21. The team was announced in June 2013 after a year and a half long search. With four men and four women, the class of 2013 had the highest percentage of female finalists. According to NASA astronaut Kathleen Rubins, "it's… a reflection of how many really talented women are in science and engineering these days." NASA received a total of over 6,300 applications, which made it the second highest number received at the time.
Christina Hammock Koch is an American engineer and NASA astronaut of the class of 2013. She received Bachelor of Science degrees in electrical engineering and physics and a Master of Science in electrical engineering at North Carolina State University. She also did advanced study while working at the Goddard Space Flight Center. Just before becoming an astronaut, she served at the National Oceanic and Atmospheric Administration as station chief for American Samoa.
Nicole "Duke" Victoria Aunapu Mann is an American test pilot and NASA astronaut. She is an F/A-18 Hornet pilot, and a graduate of the US Naval Academy, Stanford University and the US Naval Test Pilot School. She has over 2,500 flight hours in 25 types of aircraft and 200 carrier landings, and has flown 47 combat missions in Iraq and Afghanistan. Mann completed astronaut training in 2015 and was assigned in August 2018 to Boe-CFT, the first crewed test flight of the Boeing CST-100 Starliner, but subsequently reassigned to the SpaceX Crew-5, becoming the first female commander of a NASA Commercial Crew Program launch.
NASA Astronaut Group 22 is a group of twelve NASA astronauts selected in June 2017. They were joined by two Canadian Space Agency astronauts for training.
Jasmin Moghbeli is an American U.S. Marine Corps test pilot and NASA astronaut. She is a graduate of the Massachusetts Institute of Technology, Naval Postgraduate School and Naval Test Pilot School. As of 2019, she has accumulated over 2,000 hours of flight time and flown in 150 combat missions, including sorties in Afghanistan.
Warren Woodrow "Woody" Hoburg is an American engineer and NASA astronaut.
Raja Jon Vurputoor Chari is an American test pilot and NASA astronaut. He is a graduate of the United States Air Force Academy, Massachusetts Institute of Technology, and U.S. Naval Test Pilot School, and has over 2,000 flying hours. He is a brigadier general in the United States Air Force.
Anil Menon is a lieutenant colonel in the United States Air Force, emergency medicine physician, and NASA astronaut candidate.
