A few hours ago, the cosmonauts Sergey Volkov and Mikhail Kornienko and the American astronaut Scott Kelly returned to Earth on the Soyuz TMA-18M spacecraft, landed without problems in Kazakhstan. Volkov spent about six months on the International Space Station, where he arrived on September 4, 2015 as part of Expedition 45. Kornienko and Kelly spent 340 days on the Station, where they arrived on March 28, 2015 as part of Expedition 43.