2 results for “astronaut”

1. The Human Body

   The Skeleton and Bones

   astronauts or a limb in a cast, thins it fast. The marrow inside the bones is the body

   Article · 5 min read

   

2. The Human Body

   Muscles

   astronauts in weightlessness must exercise two hours a day to keep theirs. Control Each muscle fibre

   Article · 4 min read