Browse the Online NewsHour coverage of space and science . Back on Earth, Lucid is now a gold mine of information for scientists trying to understand the effects of weightlessness in space. Thank you all for being with us. There s also problems with the heart muscle, which is a muscle, the muscles along the blood vessels atrophy as well. There s a fluid shift.
Fluids move basically from lower body up into the upper body.
Uh, this causes many problems for the individual. They also lose fluid from their blood vessels, and they lose almost a pint or more of blood, uh, so this becomes a problem when they return to Earth. They immediately have a problem with their vestibular apparatus, that is, their inner ears. The inner ear controls our balance and tells us where our body is in space. I think now about 14 months.