The year-long mission was created to measure the impact of space travel on Kelly’s body.
Houston will be home for a while, as Scott will be undergoing weeks and months of physical, biological and mental tests, according to NASA.
“Scott Kelly’s one-year mission aboard the International Space Station has helped to advance deep space exploration and America’s Journey to Mars”, NASA Administrator Charles Bolden said in a press release. Those normal activities and keeping himself task-oriented each day were key to maintaining his sanity, he said.
“I feel more like an environmentalist since I’ve been up here”.
“Essentially, every bodily system you can imagine is influenced by spaceflight”, Charles said.
Kelly, however, does not expect to fly in space for NASA again. The others covered everything from how stem cells and worms respond to space to technology demonstrations to the burning of various fuels and liquids. His height was compared to his identical twin brother, Mark, a former NASA astronaut who spent a year ago with his feet planted on terra firma. “That made a big difference to me, just for my sanity”, he said.
Scientists are studying how the human body fares during long stays in space. Researching this field is vital for any future missions to Mars. He experienced fatigue and said soreness in his atrophied bones and muscles was, “a lot higher than last time”. Kelly believes it is due to the fact that his skin hasn’t touched anything for such a long time. If we don’t understand how to effectively prevent or counteract them, we could end up with Martian astronauts who are too weak to work.
“There are challenges that we have to meet, like the radiation issues”, said Kelly. But when you get back to Earth, gravity has this effect on you and it pushes you back.
Kelly’s mission, which was about twice as long as astronauts typically serve aboard the station, was part of a pathfinder program to prepare for missions to Mars that will last more than two years.
NASA’s specific plans for Mars might become more clear in the next year, as there is now a sense of urgency to create a definitive roadmap before a new presidential administration takes over. His longtime girlfriend and NASA public affairs officer Amiko Kauderer worked on them as a project with him. Many people think more funding is unlikely.
Scott called the third planet from the sun “beautiful ” during a press conference Friday, which NASA carried live online.
“Earth is a handsome planet”.
All space station crew members are trained in basic medical procedures.
But “predominantly you just notice how thin the atmosphere is, how fragile it looks”, Kelly added. We need to take care of the air we breathe and the water we drink.
“That was something that was kind of unexpected”, Kelly said.
“It’s like why I wanted to be a [Navy] pilot and land on aircraft carriers – because I knew it was hard, there were risks, and it was important, and therefore, for me, rewarding”, Kelly said.
“Probably nearly half the time I’ve been here – between sleeping and working on the computer, I’ve spent in a box the size of a phone booth”, Kelly said in earlier an interview with NBC News. It depends on the person and what experience they would want.
“I’ll never be done with space”, he said. “Maybe in the next 20 years you could be able to buy a ticket and go for a little visit”.