I had no idea bodies were affected so strongly from being in space. Eyesight changes were particularly odd, but I can understand it better now that you've explained it.
Eyesight changes surprised me too. What surprised me most about that was a few astronauts not having their eyesight go back to what it used to be after they are on the ground again. That doesn't seem to be fully understood yet. We pretty much understand what's happening with bone and muscle, but not with eyesight.
I had no idea bodies were affected so strongly from being in space. Eyesight changes were particularly odd, but I can understand it better now that you've explained it.
Eyesight changes surprised me too. What surprised me most about that was a few astronauts not having their eyesight go back to what it used to be after they are on the ground again. That doesn't seem to be fully understood yet. We pretty much understand what's happening with bone and muscle, but not with eyesight.