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Scientists noted changes in the expression of Scott Kelly’s genes while in space, with most - but not all - returning to normal after six months back on Earth.. “Put me in coach, I’m ready to go,” Scott Kelly joked. The space station where Scott Kelly lived orbits below the Van Allen radiation belt, a shell of energetic charged particles built up outside Earth’s protective magnetic field. I was tired for really long time. Both are now retired as NASA astronauts, and Mark is running for a US Senate seat in Arizona.“The return was much worse than the adaptation of getting up China Travel Vacuum Bag Suppliers there, especially for the year flight,” Kelly told reporters on Thursday.”Researchers are planning another years-long study to build on Thursday’s results.”The study will help scientists better understand the changes astronauts undergo during long-term space travel, crucial knowledge as NASA contemplates human expeditions to the Moon and Mars. Andrew Feinberg of Johns Hopkins University, who helped lead the study published in the journal Science, noted that publication of the findings coincides with the 58th anniversary of the first human space flight, by Soviet cosmonaut Yuri Gagarin. A small percentage related to the immune system and DNA repair failed to return to normal, however, indicating potential lasting damage at the genetic level.Scott Kelly during the flight experienced thickening of the carotid artery and retina, weight loss, shifts in gut microbes, reductions in cognitive abilities, DNA damage, changes in gene expression, and a lengthening of the ends of chromosomes called telomeres, scientists said.In research published on Thursday, scientists compared Scott Kelly to identical twin Mark Kelly after Scott spent 340 days in orbit on the International Space Station and Mark remained Earth-bound.Scott Kelly experienced thickening of the carotid artery and retina, weight loss, shifts in gut microbes, and a lot more.After returning home, the telomere elongation was replaced by accelerated shortening and loss, a potentially negative consequence for cellular health, they said. Both are now retired as NASA astronauts, and Mark is running for a US Senate seat in Arizona. “I felt like I had the flu after the first few days.Scott Kelly’s immune system worked fine in space and a flu vaccine administered in orbit performed just as it would on Earth, the study found.Researchers identified five possible causes for the genetic changes, including space radiation and the weightlessness of a zero-gravity environment. An American astronaut experienced multiple biological changes in space but returned to normal - with some exceptions - after coming back to Earth, according to a study involving twin brothers that shed light on how space flight affects the human body. NASA called a strong immune system critical for lengthy space missions to safeguard astronauts from disease-causing microbes in the spacecraft environment. Feinberg called the study “the dawn of human genomics in space. Scientists compared Scott Kelly to identical twin Mark Kelly after Scott spent 340 days in orbit on the International Space Station and Mark remained Earth-bound.“Radiation is much lower than what we expect it to be going to Mars,” said Steven Platts, deputy chief scientist at NASA’s Human Research Program.Dr