(a) Because blood flow to the feet is not increased in zero gravity, the astronaut’s feet do not swell.
(b) There is more blood supply to the astronaut’s face. As a result, the astronaut’s face will swell.
(a) Because blood flow to the feet is not increased in zero gravity, the astronaut’s feet do not swell.
(b) There is more blood supply to the astronaut’s face. As a result, the astronaut’s face will swell.