What conditions are required for a person to live in a vacuum, provided that the pressure of gravity

The pressure of the atmosphere is generated by the air on the outer surface of the earth under the influence of gravity, and the vacuum environment does not contain anything, so there is no pressure, and in such an environment, you have to wear a thick spacesuit, and the spacesuit is filled with air, so it looks fat.

If exposed to a vacuum, there is no external pressure and the person's blood vessels will burst ......

But according to McCraw Hill's Space Encyclopedia, when animals feel a sudden decompression in a vacuum-like state, they don't suddenly expand in size or burst out of their eyes, and in fact, organic tissues don't have such compression or expansion. Death is caused by a physical reaction caused by the accumulation of free gases in the interstitial space. If the decompression process takes half a second or more, even the lung tissue will be unharmed.

When the surrounding air pressure drops below 47 mm Hg, the moisture in various tissues turns into a vapor state starting from the surface. This causes cell failure on the surface of the body, and a large amount of body heat is lost due to evaporation, and after 6 seconds, the cell failure process spreads to the heart and lungs, causing disruption of blood circulation, followed by acute hypoxia, convulsions, and relaxation of visceral muscles. If you take off your helmet in space, in less than a minute your spacesuit will be full of feces.

After 15 seconds, you will have a disorganized mind, and after another 20 seconds, you will lose consciousness. If the air pressure returns to above 47 mmHg within about 80 seconds, you can still come back to life.

Human tissues need to be restrained by a certain amount of pressure, and if they are exposed to a vacuum for more than 80 seconds, people will die due to suffocation and tissue failure, and the death is quite ugly.

The temperature in space is very low, close to minus 270, and if the spacesuit is just leaking, the temperature will not change much in a short time. If the astronaut does not have a spacesuit, then in the next very short time the living organism will quickly freeze and turn into popsicles. Cosmic rays are very dangerous, filled with streams of high-energy particles, which are very penetrating, able to penetrate the cells of living organisms and destroy the structure of DNA, causing genetic mutations, which often lead to cancer.

Most cosmic rays are absorbed, blocked, and blocked by the Earth's atmosphere, and when an astronaut is exposed to the space environment, he is also exposed to various cosmic rays, and the consequences are self-evident.

Astronauts need to wear spacesuits in space, and there is a special structure inside the spacesuit to ensure that there is at least one atmospheric pressure on the surface of the human body, plus the oxygen delivery and air circulation device in the helmet can ensure the safety of astronauts. The bubbles in the lungs of the human body are connected to the outside world, and the internal gas pressure is basically the same as the atmospheric pressure, and with the movement of the respiratory muscles, the gas is exchanged between the gas and the blood. In a vacuum, there is no oxygen, but there is no pressure, and the lungs will gradually lose their function due to pressure.

The surface of the human body has been evaporating liquid, and the heat and humidity in the vacuum are very different from the human body, the liquid on the surface will evaporate rapidly, the cells on the surface of the body will quickly lose water and fail, and the liquid evaporation will take away a lot of heat, with the loss of body fluids and heat, the blood perfusion of the organs is insufficient, and the failure of a variety of organs will occur, or it will not be long before people die. However, because human tissues are relatively tough, they do not allow people to inflate and burst as quickly as a balloon.

The human body exposed to the vacuum of space suffers great damage from the inside out, and at first people will feel very uncomfortable, and when the old saying of the brain is deprived of oxygen, people will lose consciousness until death comes.

Human beings cannot live in a vacuum, there is no air in the vacuum, and if human beings are exposed to the vacuum, the air in the body will be drained and killed.

First of all, people can't leave oxygen, if they don't inhale oxygen in a vacuum, they will go into shock and die, and even if they can take oxygen, they won't be able to float on their own, because there is no gravitational force here.

On the one hand, due to the lack of gravity, human activities are difficult to move inch, which brings great difficulties to human travel, and on the other hand, due to long-term weightlessness, it will cause diseases on the bones of osteoporosis, which also brings problems to people's health.