Year-in-space astronaut Scott Kelly hangs up his spacesuit, retires

NASA astronaut Scott Kelly has decided to hang up his boot after spending a year in space (Source: AP)
After spending nearly a year in space, astronaut Scott Kelly is hanging up his spacesuit.
NASA announced Kelly’s retirement on Friday, less than two weeks after he returned to Earth. He leaves the space agency on April 1.
The 52-year-old Kelly spent a U.S.-record 340 days in orbit on the International Space Station to see how the human body holds up for long periods of time in space. His