NASA's Scott Kelly Grew 2 Inches In Space

Mar 05, 2016, 21:14

Since nobody knows what it will technically take to get humans to Mars, there is not a clear estimate of the such a journey's price tag.

The world's longest missions were carried out by four Soviet-era cosmonau-ts aboard the now-defunct Mir space station, including a flight from January 1994 to March 1995, spanning nearly 438 days by record holder Valeri Polyakov, a physician.

"You know, he's pretty sore right now and he's exhausted".

"Essentially, every bodily system you can imagine is influenced by spaceflight", Charles said.

For Kelly, the "Year in Space" helped put into perspective how nature is greater than man.

Of the 450 investigations that took place on the ISS during Kelly's mission, 18 were research on human reactions and functions.

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"The earth is a handsome planet", he said, describing the striking colors of the waters around the Bahamas and the rainbow hues of lakes that dot the northern Himalayas.

NASA sent Kelly to space to study the effects of microgravity conditions on the body and the effects of long-term isolation on mental health. These things are said to be valuable factors in preparing for future missions to Mars.

After landing, Kelly was immediately carried to a medical field tent for testing and evaluation by flight surgeons.

"Initially this time, coming out of the capsule, I felt better than I did last time", when his mission lasted 159 days, he said.

"That was something that was kind of unexpected", he said in his first press conference since he returned back to Earth. However, he said, "the first thing I tried to throw on a table I missed", because "you tend to underestimate the effects of gravity".

Based on his previous spaceflight experience, Kelly said he was experiencing more muscle soreness and fatigue after the latest mission. "It's very, very sensitive, nearly like a burning sensation".

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Kelly's twin brother made him a great candidate for this year-long mission. 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. It was more like 1.5 inches, Kelly said. But when you get back to Earth, gravity has this affect on you and it pushes you back.

Even an old astronaut like me can still marvel at the power of President Kennedy's declaration more than a half-century ago that space was the "new ocean" - and one we must "sail on". He said he was surprised how long that year felt.

Kelly is reuniting with his family in Houston, including his two daughters, his girlfriend, who is a NASA public affairs officer at the Johnson Space Center, and his sister-in-law, former Arizona congresswoman Gabrielle Giffords, who is Mark's wife.

"I also have an issue with my skin because it hasn't touched anything in that long...."

"Earth is a attractive planet". The eyes, brain, and muscles are the most affected in space. But you also notice how fragile the atmosphere looks and it makes you more of an environmentalist after seeing that. "We do have an impact on that and the ability to change it if we make the decision to". Over his entire career, Kelly has spent 520 days in space. Being up in space where there is no gravity exerting force on the human body means that a person's spine can stretch out by as much as three inches.

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