After a year in Earth orbit, astronauts Scott Kelly, 52, and Mikhail Kornienko, 55, returned to Earth. At 1:30 a.m. on Wednesday (GMT) NASA announced the landing of the Soyuz in Kazakhstan on his Twitter account. Kelly became the American who stayed longer in space - 340 days. But the Russian Kornienko, which was the same period, no hits record, since there is his compatriots who stayed longer in orbit. "Physically, I feel very good," said Kelly to the media through a video conference before returning. "It could become 100 days ... could stay another year, if need be," he said. Pool In microgravity, the drops of water floating in the air and in contact with the body to stick firmly to the skin, which makes it very difficult to take a shower. Astronauts make their neatness with wet sponges. Why Scott Kelly said "the first thing" that will do to get home in Houston, Texas, will jump into the pool. During the long stay at the station, the two men underwent regular medical examinations as well as a battery of tests and analyzes to study the long-term effects of microgravity on the human body.