Scott Kelly was born, along with his identical twin brother Mark, on February 21, 1964, in Orange, New Jersey, to Patricia (McAvoy) and Richard Kelly. His identical twin brother, Mark Kelly, is also a retired astronaut, and the junior U.S. Kelly retired from NASA on April 1, 2016. The mission ended on March 1, 2016, with the departure of Soyuz TMA-18M from the station.

Their year in space began with the launch of Soyuz TMA-16M on March 27, 2015, and they remained on the station for Expeditions 43, 44, 45, and 46. In November 2012, Kelly and Russian cosmonaut Mikhail Kornienko were selected for a year-long mission to the ISS. Expedition 26 ended on March 16, 2011, with the departure of Soyuz TMA-01M. He arrived at the ISS aboard Soyuz TMA-01M on October 9, 2010, and served as a flight engineer until he took over command of the station on November 25, 2010, at the start of Expedition 26. Kelly's third spaceflight was as a crewmember on Expedition 25/26 on the ISS. Kelly's second spaceflight was as mission commander of STS-118, a 12-day Space Shuttle mission to the ISS in August 2007. This was the third servicing mission to the Hubble Space Telescope, and lasted for just under eight days.

Kelly's first spaceflight was as pilot of Space Shuttle Discovery during STS-103 in December 1999. A veteran of four space flights, Kelly commanded the International Space Station (ISS) on Expeditions 26, 45, and 46. Scott Joseph Kelly (born February 21, 1964) is an American engineer, retired astronaut, and naval aviator.

Salary of nasa astronauts