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Astronaut working on the outsdie of the International Space Station

Low gravity in space made some astronauts’ blood flow backwards

15 November 2019

Spending time in microgravity can reverse the flow of a person’s blood and lead to clots, as seen in astronauts who spent months on the International Space Station
A group of people, two in space suits, on a parabolic flight

Space changes how your brain thinks and it starts right away

27 October 2017

Just a few minutes of microgravity is enough to change your brain. This suggests space tourists and long-haul astronauts may need to take precautions to think straight

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