Here are a few remarkable moments out of the 340 days Kelly spent far, far away in space.
A three-member crew, including British astronaut Tim Peake, on Saturday landed on Earth at the end of a seven-hour return journey after completing a historic six-month mission on the International Space Station.
After 186 days in space on the International Space Station, it is time for European Space Agency astronaut Tim Peake, American Tim Copra and Russian Yuri Malenchenko to return to Earth. But their return is fraught with danger.