What happens to astronauts bones when they come back from space?
What happens to astronauts bones when they come back from space? It is also the key to why astronauts experience bone loss in space. In space, astronauts experience spaceflight osteopenia. This condition can cause astronauts to lose, on average, one to two percent of their bone mass every month. This bone loss typically happens in the legs, hips, and spines of astronauts. What happens to muscular system in space? Because astronauts work in a weightless (microgravity) environment, very little muscle contraction is needed to support their bodies or move around. Without regular use and exercise our muscles weaken and deteriorate,...