TOPSHOT - Ground personnel help International Space Station (ISS) crew member Sergei Volkov of Russia to get out of the Soyuz TMA-18M space capsule after landing near the town of Dzhezkazgan, Kazakhstan, on March 2, 2016. US astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko returned to Earth on March 2 after spending almost a year in space in a ground-breaking experiment foreshadowing a potential manned mission to Mars. AFP PHOTO / POOL / KIRILL KUDRYAVTSEV / AFP / POOL / KIRILL KUDRYAVTSEV (Photo credit should read KIRILL KUDRYAVTSEV/AFP via Getty Images)
