Jack David Fischer is an American engineer, test pilot and a former NASA astronaut.[2] Fischer was selected in June 2009 as a member of the NASA Astronaut Group 20 and qualified as an astronaut in 2011. He made his first spaceflight in April 2017, as a flight engineer for Expedition 51/52 on the International Space Station.

Kjell Norwood Lindgren is a current NASA astronaut. Lindgren was selected in June 2009 as a member of the NASA Astronaut Group 20. He launched to the International Space Station (ISS) as part of Expedition 44/45 on 22 July 2015.

Kathleen Hallisey "Kate" Rubins is a NASA astronaut. She became the 60th woman to fly in space when she launched on a Soyuz spacecraft to the International Space Station on July 6, 2016. She returned to Earth on October 30, 2016 aboard a Soyuz. She was a crew member of Expedition 48 and Expedition 49 of the International Space Station.

Scott David Tingle is a NASA astronaut. He was selected in June 2009 as a member of the NASA Astronaut Group 20, qualifying in 2011. Serving as a flight engineer as part of Expedition 54 and 55, Tingle launched into space on board Soyuz MS-07 in December 2017, and returned in June 2018. Tingle is a highly decorated naval pilot, having flown 51 types of aircraft over more than 4,500 flight hours, landed 750 aircraft with carrier arrestments, and fought in 54 combat missions.

Mark Thomas Vande Hei is a NASA astronaut who served as a flight Engineer for Expedition 53 and 54 on the International Space Station.

Gregory Reid Wiseman is an American astronaut, engineer, and naval aviator. Wiseman was selected in June 2009 as a member of the NASA Astronaut Group 20 and qualified as an astronaut in 2011. Wiseman took part in his first spaceflight as part of the crew of Expedition 40/41, which launched to the International Space Station on May 28, 2014, and returned on November 10, 2014. Before joining NASA, Wiseman was a Naval Aviator and test pilot. Wiseman has been the Deputy Chief of the Astronaut Office since June, 2017, working under Chief Astronaut Patrick Forrester.

Norishige Kanai, M.D. is a Japanese doctor and JAXA astronaut. He is a lieutenant and Diving Medical Officer in the Japan Maritime Self-Defense Force (Medical Service Division, 1st Service School). He served as a crew member on board the International Space Station for Expedition 54/55, and returned to Earth on June 3 2018.

Josh Aaron Cassada is an American physicist, test pilot, and NASA astronaut. Prior to his selection to join NASA in 2013, Cassada served as a test pilot in the US Navy, and has over 3,500 hours in more than 40 aircraft, and 23 combat missions. In August 2018, Cassada was selected for CTS-1, the first operational mission of the Boeing CST-100 Starliner. In 2021 he was reassigned to a SpaceX Crew-5 flight aboard Crew Dragon spacecraft due to lengthy delays with Starliner program.

Victor Jerome Glover is a NASA astronaut of the class of 2013. Glover is a Commander in the U.S. Navy who hails from Pomona, California and Prosper, Texas. He is an F/A-18 pilot and graduate of the U.S. Air Force Test Pilot School. Glover holds degrees from California Polytechnic State University at San Luis Obispo, Air University and Naval Postgraduate School. He was a naval legislative fellow working on the personal staff of the Honorable John McCain supporting defense and foreign relations policy and oversight.

Nicole 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, 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 test flight of the Boeing CST-100 Starliner. In 2021 she was reassigned to a SpaceX Crew-5 flight aboard Crew Dragon spacecraft due to lengthy delays with Starliner program.

Jessica Ulrika Meir is Assistant Professor of Anesthesia at Harvard Medical School, Massachusetts General Hospital, Boston, following postdoctoral research in comparative physiology at the University of British Columbia. She has studied the diving physiology and behavior of emperor penguins in Antarctica, and the physiology of bar-headed geese, which are able to migrate over the Himalayas. In 2000, Meir graduated with a Master of Space Studies from the International Space University in Strasbourg, France. In September 2002, Meir served as an aquanaut on the NASA Extreme Environment Mission Operations 4 (NEEMO 4) crew. In June 2013 she was named an astronaut candidate by NASA, becoming one of the eight members of NASA Astronaut Group 21. She is from Caribou, Maine.

Kayla Jane Barron is an American submarine warfare officer and NASA astronaut candidate of the class of 2017.