One biological molecule may explain why space affects astronauts’ health – Inverse

For more than 50 years
, humans have been fascinated by the idea of exploring the cosmos, sending astronauts to the Moon and the International Space Station in low-Earth orbit.
But all those space journeys come at a cost. The microgravity environment appears to take a toll on the human body, affecting astronauts’ brains, hearts, muscle and bone mass, and vision. But because so few people have been to space, little is known about the true extent of these worrying symptoms or what drives them in the…

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