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US astronaut Andrew Fustell, a video of his return from the International Space Station (ISS), is having trouble walking after 197 days spent in space. He is forced to learn to walk and get used to gravity.
According to articles in scientific journals dealing with such incidents, the difficulty of walking poses a problem for astronauts who must stay away for several months and must exercise daily to maintain the health of their muscles weakened by the lack of use in the space.
Launched in 1998, the International Space Station is 390 kilometers from the surface of the Earth. It is designed to prepare humans for long periods of space and to conduct extraterrestrial experiments.
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