Astronaut Scott Kelly's DNA got altered after spending a year in space

NASA's astronaut who spent a whole year in space showed changes in his DNA

NASA astronaut who spent a year in space now has different DNA from his twin

As it turns out, space really does change us, and upon Scott's return to Earth it was discovered that his DNA has significantly changed.

The changes are "thought to be from the stresses of space travel, which can cause changes in a cell's biological pathways", read the NASA statement.

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Scott had grown two inches taller, lost body mass and he moved with slower speed and accuracy, according to findings published by NASA. These changes can trigger the formation of new molecules or "space genes". Researchers now know that 93 percent of Scott's genes returned to normal after landing. Some changes returned to normal within hours or days of landing, while a few persisted after six months, NASA reported. This was the final mission for Scott, who spent a total of 520 days in space during his career. It is clear that most of the changes that the astronaut went through have reversed following his return to planet Earth, however, 7 per cent of Scott's genetic code remains altered and it might as well stay the same permanently. At least this was the result of NASA analyzes, after which the scientists announced that their DNA had been changed by 7%.

Astronauts Mark Kelly, left, and Scott Kelly attend the Breitling Global Roadshow event at The Duggal Greenhouse on Thursday, Feb. 22, 2018, in NY. They looked at various proteins and evaluated the twins' cognition as part of the overall study. "The body thinks there's a reason to defend itself". "We now know with certainty that staying in space is a very unpleasant experience for the human organism, who is trying to respond to extreme conditions", scientists say on United States news networks. So when Scott Kelly was selected, along with Mikhail Korniyenko, for a special 340-day so-called year-long mission to the International Space Station, HRP was provided with the opportunity to study the medical, psychological and biomedical challenges faced by astronauts during long-duration spaceflight.

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One-Year Mission & Twins Study The two astronauts began their year in space on March 27, 2015, and returned to Earth on March 1, 2016.

And because different research laboratories were given different missions in the comparative study, it took about two years to come up with the preliminary results, and they're quite interesting. Scott's voyage is now the longest documented space mission completed by an astronaut, and is a stepping stone to a three-year mission to Mars. This summary is set to be released later this year.

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