Let's face it, going to space is havoc on the human body.
Let’s face it, going to space is havoc on the human body. We evolved in an Earth environment, over hundreds of millions of years; so take away the Earth environment and things start going a little awry.
Nope. You’re not going to get me to click to read about some gross fingernail thing.
They fall off
I DIDN’T WANT TO KNOW!