Human Adaptability to Space

Human biological properties have evolved over the surface of the earth for millions of years. Gravity shapes our bones and muscles. A rich atmosphere of oxygen nourishes our body and protects us from harmful radiation. Our psychological cycle of sleep, heart rate, aging reflects the time rhythm of the earth. An airplane that brings people upstream to the atmosphere is a common means of transportation.

The human body needs to adapt to space travel. The lack of gravity plays an important role in the health of astronauts. Size and ratio are spatially different from those on the earth. For astronauts, changes in body fluids related to weightlessness can cause liquid to accumulate in strange places. The astronaut's face may swell very much. Because there is no gravity, some of the body fluid volume normally left in the legs will move to other body parts. For example, bone mass is one of the things that can be lost in space. In some studies, astronauts each month lost 1% of their bone mass in outer space. Scientists are not sure when bone loss stops when they return to the planet during a long space journey. So far, the astronaut was in the universe for the longest time of more than a year.

Worldwide, the microgravity of the universe has a big influence on human health. For beginners, the body will suffer a significant increase in bone mass - older men and women tend to reduce the bone density on the earth from 1% to 5% per year. . Loss of calcium from bone can exacerbate the kidneys, kidney stones, weakens all muscles, including the heart. The most serious influence of the space to the body is intracranial pressure - blood and body fluids rise to the head and increase the pressure on the brain and spinal cord tissue. The effect of this stress is very big and serious, and the decline in vision is the most straightforward