John Bennett Herrington is a retired United States Naval Aviator, engineer and former NASA astronaut. In 2002, Herrington became the first enrolled citizen of a Native American tribe to fly in space.
Michael Landon Gernhardt is a NASA astronaut and manager of the Environmental Physiology Laboratory, and principal investigator of the Prebreathe Reduction Program (PRP) at the Lyndon B. Johnson Space Center.
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.
Nicholas James MacDonald Patrick, is a British-American engineer and a former NASA astronaut. His flight on the 2006 Discovery STS-116 mission made him the fourth person born in the United Kingdom to go into space.
Douglas Harry "Wheels" Wheelock is an American engineer and astronaut. He has flown in space twice, logging 178 days on the Space Shuttle, International Space Station, and Russian Soyuz. On July 12, 2011, Wheelock announced that he would be returning to active duty with the United States Army in support of Operation Enduring Freedom. He is currently working with NASA to test the Orion spacecraft at the Glenn Research Center in Plum Brook, Ohio.
Timothy Lennart "Tim" Kopra is an American engineer, a Colonel in the United States Army, and a retired NASA astronaut. He served aboard the International Space Station as a flight engineer for Expedition 20, returning to Earth aboard Space Shuttle Discovery on the STS-128 mission on September 11, 2009. He returned to the ISS for the second time in December 2015, as part of Expedition 46 and as the commander of 47.
Clayton Conrad Anderson is a retired NASA astronaut. Launched on STS-117, he replaced Sunita Williams on June 10, 2007, as a member of the ISS Expedition 15 crew. He is currently an author, a motivational speaker, and a Professor of Practice at Iowa State University in Ames, Iowa. In 2022 he became the president and CEO of the Strategic Air Command & Aerospace Museum.
John Daniel "Danny" Olivas is an American engineer and a former NASA astronaut. Olivas has flown on two space shuttle missions, STS-117 and STS-128. He performed EVAs on both missions, totaling 34hrs 28min.
NASA Extreme Environment Mission Operations, or NEEMO, is a NASA analog mission that sends groups of astronauts, engineers and scientists to live in the Aquarius underwater laboratory, the world's only undersea research station, for up to three weeks at a time in preparation for future space exploration.
Timothy John "T. J." Creamer is a NASA flight director, retired astronaut and a colonel in the United States Army. Creamer was born in Fort Huachuca, Arizona, but considers Upper Marlboro, Maryland, to be his hometown. He is married to the former Margaret E. Hammer. They have two children.
Nicole Marie Passonno Stott is an American engineer and a retired NASA astronaut. She served as a flight engineer on ISS Expedition 20 and Expedition 21 and was a mission specialist on STS-128 and STS-133. After 27 years of working at NASA, the space agency announced her retirement effective June 1, 2015. She is married to Christopher Stott, a Manx-born American space entrepreneur.
Randolph James "Komrade" Bresnik is a retired officer in the United States Marine Corps and an active NASA astronaut. A Marine Aviator by trade, Bresnik was selected as a member of NASA Astronaut Group 19 in May 2004. He first launched to space on STS-129, then served as flight engineer for Expedition 52, and as ISS commander for Expedition 53.
Thomas Henry "Tom" 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.
Ronald John Garan Jr. is a retired NASA astronaut. After graduating from State University of New York College at Oneonta in 1982, he joined the Air Force, becoming a Second Lieutenant in 1984. He became an F-16 pilot, and flew combat missions in Desert Shield and Desert Storm. Before becoming an astronaut he was the Operations Officer of the 40th Flight Test Squadron (FTS). He first flew in space as a mission specialist on the May 2008 STS-124 mission to the International Space Station (ISS). He returned to ISS on April 4, 2011, for a six-month stay as a member of Expedition 27. Garan is a highly decorated former NASA astronaut who flew on the US Space Shuttle, Russian Soyuz, and International Space Station. In total he spent 178 days in space and more than 71 million miles in 2,842 orbits of Earth, 27 hours and 3 minutes of EVA in four spacewalks, and 18 days on the bottom of the ocean during the NEEMO-9 undersea mission.
Michael Reed Barratt is an American physician and a NASA astronaut. Board certified in internal and aerospace medicine, he served as a flight surgeon for NASA before his selection as an astronaut and has played a role in developing NASA's space medicine programs for both the Shuttle–Mir program and International Space Station. His first spaceflight was a long-duration mission to the International Space Station as a flight engineer on the Expedition 19 and 20 crew. In March 2011, Barratt completed his second spaceflight as a crew member of STS-133. Barratt made a second long-duration mission to the International Space Station as a flight engineer on the Expedition 70, 71, and 72 crew and also served as the pilot on the SpaceX Crew-8 mission.
Robert Louis Behnken is an American engineer, a former NASA astronaut, and former Chief of the Astronaut Office.
Josef F. Schmid is a German-American physician, NASA flight surgeon and a major general in the United States Air Force Reserves. He served as an aquanaut on the joint NASA-NOAA NEEMO 12 underwater exploration mission in May 2007. On 8 October 2021 he became one of the first humans to be Holoported off the planet and into space, visiting the International Space Station by telepresence.
William Laurence Todd is a Project Manager for Exploration Analogs at NASA's Johnson Space Center (JSC) in Houston, Texas. He has also served as a NASA Undersea Research Team Project Lead and Spaceflight Training Simulation Supervisor at NASA JSC. Todd is a veteran Aquanaut of 5 missions. In 2001, he commanded the first NASA Extreme Environment Mission Operations (NEEMO) mission, a joint NASA-NOAA program to study human survival in the Aquarius underwater laboratory in preparation for future space exploration.
Marcum "Marc" Reagan is a Station Training Lead in Mission Operations at NASA's Johnson Space Center in Houston, Texas. He leads a team of instructors who together are responsible for developing and executing complex simulations for International Space Station (ISS) assembly and operations. Reagan also serves as an ISS "Capcom" from Mission Control, communicating with ISS astronauts in orbit. In May 2002, Reagan served as an aquanaut on the NASA Extreme Environment Mission Operations 2 crew. He subsequently served as Mission Director for multiple NEEMO missions.
Jonathan Robert Dory is a Human Systems Integration Lead at NASA's Johnson Space Center (JSC) in Houston, Texas. He is Branch Chief of NASA's Habitability and Human Factors Branch, part of the Habitability and Environmental Factors Division at NASA/JSC. Dory supports crew safety and productivity on the International Space Station (ISS) Program by planning and assessing the on-orbit interior configuration of ISS, as well as performing anthropometric analysis of crew tasks. He contributes to the integrated operation of the Space Station while using 3D computer graphics and animation software as part of his daily work. In July 2002, Dory served as an aquanaut on the NASA Extreme Environment Mission Operations 3 crew.
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