Astronaut Scott Kelly who just returned this month from his year-in-space is retiring on April 1, NASA said.
Kelly was selected by NASA in April 1996 and broke the American record for most cumulative time in space, with a record 520 days, according to NASA.
Recommended Videos
"His passion for this work has helped give hundreds of thousands of people a better understanding of what NASA does, thanks in part to the numerous photos and updates he shared from space," Brian Kelly, director of Flight Operations at NASA’s Johnson Space Center in Houston.
He and Russian cosmonaut Mikhail Kornienko spent one year on the International Space Station.
Kelly conducted three space walks while in orbit for his year-long mission.
NASA says after Kelly's retirement he will continue to participate in ongoing research related to his year-long mission.
"We appreciate his years of service and anticipate many benefits to come from them, thanks to the research he’s supporting," Kelly said.