Rise Posture Time! What happens when the human body is exposed directly to space?

In science fiction, it is often seen that the ship's hull was broken and a crew was stranded in the capsule without any equipment, but he had to open the hatch to drive out the intruders in the capsule. Lack of space clothing protection, people directly exposed to the vacuum and near 0 pressure of the environment, it is impossible to survive for a long time ...

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But what is actually going to happen? Will your eyes burst out? Your blood will boil and evaporate quickly? After an animal experiment in the 60 's and a summary of accidents in space and air ballast, we found that the direct exposure of humans to space was not as dramatic as we had imagined.

When exposed to space, the first thing you notice is hypoxia, but you don't lose consciousness immediately. Your body will continue to use the oxygen in your bloodstream, which can last for 15 seconds. If you don't hold your breath in the process, you can probably survive for 2 minutes without permanent damage.

But if you hold your breath, you have a cup. As atmospheric pressure drops, the gas in your lungs expands rapidly, and the lungs burst, and the gas enters your circulatory system. So if you find yourself suddenly exposed to a vacuum, the first thing you need to do is exhale all the gas in your lungs.

There's one more thing you can't do, exposing yourself to space for about 10 seconds and you'll find your skin and tissues start to sweat. This is caused by the evaporation of fluids in your body at the 0 pressure environment. But because the human skin is strong enough, you don't swell and burst like a balloon. Furthermore, if you are brought back to normal pressure, your skin and tissue can return to its original state.

Unless you are in shock, exposure to space does not affect your blood circulation because your circulatory system maintains enough blood pressure to keep blood flowing. Astronaut Jim LeBlanc in an Air cabin experiment in 1965, he was exposed to a near-vacuum environment due to a leak in his spacesuit. In this accident Jim kept about 14 seconds of consciousness, according to his description, exposed to the vacuum of the tongue will boil water, and his final feeling before the coma is the tongue bubbling. Jim was rescued when he discovered the anomaly after about 15 seconds when Jim was exposed to a vacuum and then injected air into the air compartment in time.

Without the protection of the spacesuit, you will be exposed directly to cosmic rays, which can cause severe sunburn, and you may also get decompression sickness. However, although outer space temperature is very low, but you will not be frozen before suffocation, because in the absence of convection and conduction in the case of heat is not so quickly lost.

If you end up dead in space, your body will not rot like an ordinary corpse on Earth because of lack of oxygen. If the body is closer to the heat source, it will eventually become mummified, or you will be frozen. If you die in a spacesuit, the body rots until the oxygen in the spacesuit is depleted. No matter which method of death, because of lack of air, the body can not be degraded, your body will remain for a long time, and in the vast space floating millions of years.