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Time can appear to move faster or slower to us relative to others in a different part of space-time. That means astronauts on the International Space Station age slower than people on Earth.
While in an astrophysical sense, astronauts may shave off a few milliseconds of age, space can take years, if not a decade, away from their bone health upon return to Earth.
The studies support earlier work that found such journeys could significantly damage the brains of astronauts, and age them prematurely. [18] In March 2019, NASA reported that latent viruses in humans may be activated during space missions, adding possibly more risk to astronauts in future deep-space missions. [19]
As of December 2023, a total of 676 people have flown into space and 19 of them have died. This sets the current statistical fatality rate at 2.8 percent. [3] NASA astronauts who died on duty are memorialized at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Merritt Island, Florida.
For a long time, Avdeyev held the record for time dilation experienced by a human being. [1] [2] [3] In his 747 days aboard Mir, cumulative across three missions, he went approximately 27,360 km/h and thus aged roughly 0.02 seconds (20 milliseconds) slower from an Earthbound person's perspective, [4] which is considerably more than any other human being, except Sergei Krikalev. [5]
He is the record holder for the longest single stay in space, staying aboard the Mir space station for more than 14 months (437 days 18 hours) during one trip. [1] His combined space experience was more than 22 months. [2] Selected as a cosmonaut in 1972, Polyakov made his first flight into space aboard Soyuz TM-6 in 1988.
Ronald Erwin McNair (October 21, 1950 – January 28, 1986) was an American NASA astronaut and physicist.He died at the age of 35 during the launch of the Space Shuttle Challenger on mission STS-51-L, in which he was serving as one of three mission specialists in a crew of seven.
William Anders, an Apollo astronaut who snapped the iconic 1968 “Earthrise” photo of the Earth while orbiting the moon, died at age 90 in a plane crash near the San Juan Islands on Friday ...