Your Body Gets Rewired for Space: Bones Vanish at 1% a Month
In microgravity, fluid rushes to your head, your face puffs up, and your legs go skinny. Your heart changes shape and starts slacking off, while the bones that once held up your weight quietly dissolve at 1-1.5% a month. Your spine stretches, your eyesight can blur — the body simply switches off its Earth settings, and this is the story of what happens to astronauts along the way.