Gregory Chamitoff, born August 6, 1962 in Montreal, Quebec, Canada, has been in space twice.
His first trip was aboard Discovery (STS-124) as mission specialist to the International Space Station in May 2008. He participated in Expeditions 17 and 18 spending about six months on the space station. He returned to Earth aboard Endeavour (STS-126) in November.
His second mission was aboard Endeavour (STS-134) to the International Space Station in May-June 2011. He spent almost 16 days in space. It was the last flight of Endeavour.
Ronald Garan, Jr., born October 30, 1961 in Yonkers, New York, is a veteran of two space flights.
His first mission was aboard Discovery (STS-124) as mission specialist to the International Space Station in May-June 2008. He conducted three EVAs during the mission with fellow astronaut Michael Fossum.
His second and final flight was aboard Soyuz TMA-21 as Flight Engineer to the ISS in April 2011. He participated in Expeditions 27 and 28. He conducted an EVA with Fossum in July 2011. He returned to Earth in September 2011.
Kenneth Ham, born December 12, 1964 in Plainfield, New Jersey, is a veteran of two space shuttle missions.
His first flight was aboard Discovery (STS-124) as pilot in May-June 2008 to the International Space Station. The flight delivered the Japanese Experiment Module, a pressurized section that is the largest module of the space station.
His second flight was aboard Atlantis (STS-132) as commander in May 2010 to the ISS. It was the penultimate flight of Atlantis.
Karen Nyberg, born October 7, 1969 in Parker's Prairie, Minnesota, has been in space twice.
Her first trip into space was aboard Discovery (STS-124) as mission specialist in May-June 2008. She served as the lead for all the robotic arm operations.
Her second and final flight was aboard Soyuz TMA-09M as flight engineer to the International Space Station, launched in May 2013. She was part of the crew of Expedition 36. They returned to Earth in September.
Stephen Frick, born September 30, 1964 in Pittsburgh, Pennsylvania, is a veteran of two space shuttle flights.
His first mission was aboard Atlantis (STS-110) as pilot in April 2002 to the International Space Station. The main purpose of the mission was to attach a stainless steel truss to the Destiny Laboratory Module.
His second and final mission was aboard Atlantis (STS-122) was as commander in February 2008 to the ISS. His total amount of time in space is almost 24 days.
Garrett Reisman, born February 10, 1968 in Morristown, New Jersey, is a veteran of two space shuttle flights and two expeditions aboard the International Space Station.
He served as an aquanaut in the Aquarius underwater laboratory as part of expedition NEEMO 5 mission in June 2003.
His first flight was aboard Endeavour (STS-123) as flight engineer, launched March 2008 to the ISS. He was part of Expedition 16 and 17 and returned to Earth in October 2008 on Discovery (STS-124). During this mission, Stephen Colbert interviewed Reisman in May on an episode of The Colbert Report.
His second and final flight was aboard Atlantis (STS-132) as mission specialist in May 2010. He conducted 2 of the 3 EVAs during the mission. Reisman also helped design the mission patch working with NASA Sean Collins.
Michael Fossum, born December 19, 1957 in Sioux Falls, South Dakota is a veteran of two space shuttle missions and one Soyuz mission to the International Space Station.
His first trip into space was aboard Discovery (STS-121) as mission specialist to the ISS in July 2006. The main objective of this flight was to test new safety and repair techniques put into place after the Columbia disaster. He performed three EVAs with fellow astronaut Piers Sellers.
His second mission was aboard Discovery (STS-124) in May-June 2008 as mission specialist to the ISS. He performed three more EVAs with fellow astronaut Ronald Garan.
His third and final trip into space was aboard Soyuz TMA-02M, which launched in June 2011 as part of Expedition 28 crew. He was commander of Expedition 29 from September to November 2011, when he returned to Earth
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STS-124 crew (L-R): Gregory Chamitoff, Michael Fossum, Kenneth Ham, Mark Kelly, Karen Nyberg, Ronald Garan and Akihiko Hoshide
Mission patch
Space Shuttle Discovery (STS-124), launched May 31, 2008, delivered the Japanese Experiment Module called Kibo to the International Space Station. Its crew consisted of Commander Mark Kelly, Pilot Kenneth Ham, Karen Nyberg, Ronald Garan, Michael Fossum, Akihiko Hoshide (JAXA) and Gregory Chamitoff.
The crew also delivered replacement parts for a malfunctioning toilet on the ISS.
Twins Mark Edward Kelly and Scott Joseph Kelly, born February 21, 1964 in Orange, New Jersey, are both astronauts, who were selected by NASA in 1986 and have logged many hours in space.
Mark Kelly is a veteran of four space shuttle flights. His first trip into space was aboard Endeavour (STS-108) to the International Space Station in December 2001 as pilot. His second missin was aboard Discovery (STS-121) also to the ISS as pilot in July 2006. He served as commander on his third flight back on Discovery (STS-124) May-June 2006. His fourth and final flight was on Endeavour (STS-134) as commander May-June 2011. He retired from NASA June 21, 2011 to help his wife, Arizona Congresswoman Gabrielle Giffords, who was critically wounded in an assassination attempt, recover from her injuries.
Scott Kelly has flown two space shuttle missions and set a record in 2015 for the total number of accumulated days. This record was broken the following year by Jeff Williams, and the year after by Peggy Whitson.
His first flight was aboard Discovery (STS-103) as pilot in December 1999, a servicing mission to the Hubble Space Telescope. His second mission was on Endeavour (STS-118) as commander to the ISS in August 2007. He flew to the ISS aboard Soyuz TMA-01M to the ISS with Commander Aleksandr Kaleri and Oleg Skripochka in October 7, 2010. He first served as flight engineer on Expedition 25, beginning the second part of the expedition. He became commander of Expedition 26 which began on November 10, 2010. He returned to Earth March 16, 2011.
His fourth and final mission was on Soyuz TMA-16M launched March 27, 2015 with Mikhail Kornienko, when he began a year-long mission aboard the ISS. He spent 11 months inspace, conducting 3 EVAs before he returned to Earth March 2016 on Soyuz TMA-18M. He was aboard the ISS for Expeditions 43-46. Upon his return, he retired from NASA in April 2016.
He published a book last year Endurance about his time in space.
Akihiko Hoshide, born December 28, 1968 in Tokyo, Japan, has flown on the Space Shuttle and Soyuz to the International Space Station. He is the third Japanese astronaut to conduct an EVA.
His first mission was aboard Discovery (STS-124) May-June 2008 as a mission specialist.
His second flight was aboard Soyuz TMA-05M, launched in July 2012 to the ISS as part of Expeditions 32 and 33. It was during this time he performed EVAs with Suni Williams.
In 2014, he commanded NEEMO 18, an undersea exploration mission at NASA's Aquarius underwater laboratory.