How Peggy Whitson stayed in shape for nine months aboard the ISS

The human body, built as it is for terrestrial life on Earth, does not readily adapt to the rigors of microgravity. Half of all astronauts suffer from Space Adaptation Syndrome (SAS or, more commonly, “space sickness”) for the first few hours their missions, at least until their vestibular systems readjust to the weightless environment. Fluid …

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