On earth, we can live comfortably thanks to the protection layers of the atmosphere. The atmosphere serves as a blanket antidote to radiation harmful UV rays from the sun, set the temperature of the planet we live on, and also maintain the pressure of the atmosphere is good.
This is different with the space, in which all things can be very dangerous. Without the atmosphere, outer space is a vacuum chamber — vacuum, pressure, empty room of the material.
Have You ever wondered what might happen to the human body when you’re in outer space without a space suit, without the protection of a space shuttle? Is it really as dramatic as that shown in Hollywood movies? Do You really might explode? Is there even the slightest chance of survival?
1. Space is very cold, You’ll freeze
Space is very cold environments. The temperature of outer space reach -270ºC, the coldest temperature ever recorded — only a few degrees is slightly higher than the state of absolute zero. So, if at any time You get yourself floating without direction in the absence of the absence of space suit, just in time for Your body froze in total.
In hot weather the earth, the human body produces sweat as a natural way of cooling the body. So sweat to evaporate, the residue of sweat that clings to the skin using heat energy of the body so as to produce the effect of cold cool. In outer space, this process many times. Usually, the humidity will be slightly hamper the cooling effect because it will be more difficult for sweat to evaporate in the air that has been mixed with water. In the vacuum of space, no moisture.
The absence of moisture will allow the cooling process is accelerated many times with evaporative any body fluid that is exposed. Your eyes are watery, a mouth that is coated in saliva, and the path of respiratory damp will freeze as a result of the acceleration of this process.
However, this process will not happen as quickly as you think. The vacuum of space leads to the heat transfer body becomes very slow, maybe even almost not there at all, so before you completely froze, Your body will undergo some process other first — even a few can occur at the same time. First, bulging like a balloon.
2. Without protection, Your body can ballooned incredible in space
When in cold air or in the water while on earth, You have the ability to produce the current “convection” which will draw heat from the body, but the vacuum of space does not have the ability to heat transfer is due to the presence of zero pressure.
No, You will not explode. Just because the body is exposed by the zero pressure of the vacuum, does not mean Your body will automatically lose all cohesion (the attractive forces between molecules).
But just because You’re not going to explode does not mean You will not inflate. Without the presence of the atmospheric pressure of the earth, the water that makes up 70 percent of the human body will form water vapor. Similarly, the nitrogen dissolved in the blood flow near the surface of Your skin will be gathered into small bubbles. Over time, these bubbles expand yourself, inflating the body to twice the normal size of hands and feet to spread throughout the body. This condition is called ebullism. Ironically, all the organs in the body is protected by the skin elastic — effective enough to prevent Your body to explode from within it. Ebullism cause tissue damage is severe and Your blood flow will be impeded, but You will not die quickly so having this condition.
3. Burning due to exposure to direct sunlight
A day playing on the beach without sunscreen protection, the same course, exposing yourself against burns due to sunburn. Now, imagine if the body of the ‘naked’, You are exposed to direct sunlight without the protection of the ozone layer which is able to ward off UV rays are the most dangerous though. Floating in the vacuum of space without protection astronaut suit will burn the skin exposed. In addition, look at the sun directly will “fry” the retina of the eye, make You blind. Even though You can survive, the risk of contracting skin cancer will increase many-fold.
4. The blood will not boil, but other body fluids can be
The pressure in the vacuum chamber so low that the boiling point of the fluid of the human body while in the vacuum of space will be drastically decreased below the normal temperature of the body (37ºC). As a result, the body initiates the formation of gas bubbles in the body fluid which can be serious.
But, Your blood can’t be boiling due to this. Human skin that is elastic to be able to maintain the temperature and pressure of blood in the body to remain normal (for a while) to prevent blood boiling. Meanwhile, Your saliva will start to boil and burn Your tongue.
5. Suffocated due to hypoxia
While in the vacuum of space, You will be completely lack of oxygen, but not in the way You might think. The conditions in which a person suffers from a lack of oxygen extremes is called hypoxia. Without the atmospheric pressure of the earth, the oxygen in the blood will evaporate and escape from Your body. As a result, your cardiovascular system will fail to work, and no blood that can be sent to the muscles and vital organs of the other. Plus, the effects suffocate it will make Your skin begins to turn blue.
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