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Astronauts aboard the ISS, on the other hand, are much farther from Earth's center of gravity than the rest of us — about 260 miles farther. So, in that case, astronauts actually age slower .
One year later, the ship is back home and the clock shows 6 years. So, during the trip back, both twins see their sibling's clock going 3 times faster than their own. Factoring out the fact that the light-time-delay is decreasing by 0.8 seconds every second, each twin calculates that the other twin is aging at 60% his own aging speed.
The study found Mark to be an additional five milliseconds older than his brother due to the extended time Scott had spent in space at higher rates of orbital speed among other factors.
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]
Flights 90 and 91 made Walker the first human to make multiple spaceflights according to the FAI definition of greater than 100 km (62 mi). [5] [6] [7] Flight 77 on January 17, 1963 also qualified Walker as an astronaut, according to the US Department of Defense definition of greater than 50 mi (80 km). [8] [9]
Alfred Merrill Worden (February 7, 1932 – March 18, 2020) was an American test pilot, engineer and NASA astronaut who was command module pilot for the Apollo 15 lunar mission in 1971.
Michael Philip Anderson was born in Plattsburgh, New York on December 25, 1959, to Barbara and Bobbie Anderson. He was their third child and only son. Bobbie serviced jets at Plattsburgh Air Force Base in Plattsburgh [2] and was transferred to Fairchild Air Force Base, about 12 miles (19 km) away from Spokane, Washington, which Anderson spoke of as his hometown. [3]
Gregory Bruce Jarvis (August 24, 1944 – January 28, 1986) was an American engineer and astronaut who died during the January 28, 1986 destruction of the Space Shuttle Challenger on mission STS-51-L, where he was serving as payload specialist for Hughes Aircraft.