Why do astronauts grow taller in space?
Space Stretch Secret
Why do astronauts grow taller in space?
You've probably heard this wild fact: astronauts grow taller in space. Not a little taller — we're talking two or three whole centimeters, sometimes more. That's almost the height of your thumb, added to your body in just a few days. How does that even happen?
The secret is gravity. Down here on Earth, gravity is always pulling you toward the ground. It's been tugging on your body every single second of your life. And your spine — the stack of bones running down your back — feels that pull most of all.
