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Astronauts age more slowly than people on Earth. The difference isn't noticeable though — after spending six months on the ISS, astronauts age about 0.005 seconds less than the rest of us.
It is still unknown whether bone recovers completely. Unlike people with osteoporosis, astronauts eventually regain their bone density. [citation needed] After a 3–4 month trip into space, it takes about 2–3 years to regain lost bone density. [citation needed] New techniques are being developed to help astronauts recover faster. Research on ...
He then sees fast (blue) images for the remaining 1 year until the ship returns. In the fast images, the ship twin ages by 1 × 3 = 3 years. The total aging of the ship twin in the images received by Earth is 3 + 3 = 6 years, so the ship twin returns younger (6 years as opposed to 10 years on Earth).
It's a different kind of space age. Why astronauts age slower in space: Here’s how much younger stranded explorers will be when they return to Earth Skip to main content
Astronauts may not be able to quickly return to Earth or receive medical supplies, equipment, or personnel if a medical emergency occurs. The astronauts may have to rely for long periods on limited resources and medical advice from the ground. The possibility of blindness and of bone loss have been associated with human space flight. [64] [65]
Astronauts at the center of Starliner drama step out for spacewalk after more than 7 months in orbit
Francisco Carlos "Frank" [2] Rubio (born December 11, 1975) is an American flight surgeon, US Army colonel and helicopter pilot, and NASA astronaut. He holds the American record for the longest spaceflight at 371 days.
(AP Photo/John Raoux) Four people are about to embark on a journey that will take them farther from Earth than anyone has traveled since 1972 when Apollo 17 astronauts landed on the moon. Polaris ...