Looking towards the starry sky, the number of people in ancient times had infinite interest. However, due to the lack of scientific knowledge in ancient times, they basically knew nothing about the world beyond the earth, so many myths and legends appeared.
With the continuous progress of human civilization, hundreds of years ago, mankind finally embarked on the path of science and embarked on a new journey of civilization. With the help of scientific power, finally, on October 4, 1957, the first man-made satellite broke away from the shackles of the earth’s gravity and entered into space, opening a new chapter for mankind to explore the universe.
As human beings stepped out of the earth and began to explore the universe, a new profession appeared, and that was the astronaut. If you want to explore the mysteries of the universe, you can’t do without human beings walking to the stars and observing the universe up close. The environment of the universe is completely different from that of the earth. It is a cruel and harsh space. Astronauts take the dreams and expectations of mankind to the starry sky, which is an adventurous and great undertaking.
Due to the complex and harsh space environment, not everyone can go out of the earth to explore space. To become a glorious astronaut, the requirements for a person’s various qualities are very high, not only having very good physical qualities, but also strong psychological qualities.
You must know that after you leave the earth, you will leave the homeland of human existence. Space is dark, cold and lonely. Every astronaut who walks out of the earth will have a sense of loneliness, especially when exploring other distant planets, there will be a strong loneliness. sense. If the mental quality is not good, the mentality may collapse, which is not conducive to missions in space.
Generally speaking, astronauts have corresponding protection measures when performing missions in space. When working outside the spacecraft, it is necessary not only to put on a space suit, but also to be protected by a towline. When the astronauts are to be returned to the cabin of the spacecraft, the towline can be done easily.
The reason for binding the astronaut to the spacecraft with a tow rope is mainly because it is worried that if the astronaut falls into space, it will be a tragedy. Why is it a tragedy? Many friends may be curious: What happens if an astronaut accidentally falls into space?
We all know that the space environment is basically a vacuum environment, and astronauts can float up easily whether they are inside or outside the spacecraft. Without the binding of the towline, once the astronaut stepped out of the cabin, he would not be able to control his body and would be lost in space and fall freely.
As for the fate of astronauts? There are two situations here. One situation is that when an astronaut accidentally falls into space, he wears an astronaut on his body. In this case, the astronaut will not be finished soon, but can float in space for a period of time. The spacesuit itself can isolate the direct contact between the space and the body, and can effectively protect the safety of astronauts.
However, because the universe is in a vacuum state, there is no oxygen, and human beings cannot live without oxygen. Once the limited oxygen in the spacesuit is consumed, the astronauts will eventually die due to lack of oxygen.
Another situation is that when an astronaut accidentally falls into space without wearing a spacesuit, the outcome will be even more tragic. Some friends may say that the universe is dark and cold, and the temperature is as low as close to absolute zero, so astronauts will be frozen into an “ice lolly” without the protection of a spacesuit. So is this really the case?
I believe many friends will think that astronauts standing in space without wearing astronauts will soon be frozen into “popsicles”. If you think so, you are quite wrong. Although the temperature of the universe is close to absolute zero, the energy attribute of temperature cannot be truly expressed. Without the energy attribute of temperature, temperature cannot truly reflect its power.
In this case, the astronaut will not be frozen to death. In fact, if an astronaut has an accident in space, he will either be suffocated or die because of the boiling of body fluids. Why?
Low temperature does not mean that people can be frozen to death. Only by showing strong temperature attributes can the power of temperature be reflected. And for temperature to show its powerful power, it needs the energy and talent of a large number of molecules. I believe many friends know that the essence of temperature is the intensity of molecular motion. The more violent the molecular motion, the higher the temperature. Conversely, the lower the movement of the molecule, the lower the temperature.
For temperature to reflect energy properties, it requires the participation of a large number of molecules. If there is only one molecule in a space, even if its movement is close to stop and the temperature is close to absolute zero, it will not cause us damage to the freezing properties. Scientists have created a high temperature of hundreds of millions of degrees through the particle collider, but they cannot generate super high heat, and cannot cause high temperature damage to surrounding materials.
Although the universe is not an absolute vacuum, it is also very empty. According to the research of scientists, there is only one hydrogen atom per cubic meter of space in space. Therefore, we say that the universe is a vacuum environment. The density of this space is too low, so the temperature attribute cannot be expressed, and the astronauts will not freeze to death.
However, because the space is too vacuum, the boiling point of water is very low, and 70% of the material in the human body is water. Once the human body is in direct contact with the universe, the body fluids on the human body surface will boil. Starting from the saliva in the mouth, sweat and tears on the skin surface, all the body fluids in contact with the outside world will boil, and people will feel themselves at this time. The entire body surface is boiling.
Since the blood circulation of the human body is a closed system, although there will be no boiling phenomenon in the body within a short period of time, this state will not last long, and the boiling of the blood in the body is also a matter of time. Of course, before the blood boiled in the body, the astronaut had already lost consciousness.
It can be seen that no matter whether the astronaut wears a spacesuit or not, once accidentally falls into space, it will basically be a cruel ending. Some friends may say that we can accelerate the spacecraft, catch up with the astronaut who fell into space, and rescue it. So with the current human space technology strength, can this kind of rescue be achieved? The answer is no.
So once an astronaut falls into space, what will happen to the final destination? If the astronaut is near the orbital space of the earth, then under the influence of the earth’s gravity, it will move around the earth and become a “satellite” of the earth.
If it is in the starry sky far away from the earth, it will become a wandering “celestial body” that will continue to wander in the universe until it is captured by the gravity of a celestial body and becomes a “satellite” of the celestial body. Or the astronaut may eventually fall directly onto the surface of this celestial body, if so, the situation may be more complicated. We must know that there are countless microorganisms in the human body. Even if an astronaut has an accident in space, the microorganisms in the body can survive for a long time.
Once it falls on an ecological planet, it may pollute the ecological environment of this planet. If this planet is still in a very primitive ecological stage and life has not yet appeared, then astronauts may take the seeds of life and make this planet a planet of life. If so, the astronaut’s accident has great value instead.
Seeing this, many of my friends may have also thought of the origin of life on earth. Although the original life of the earth was born 3.8 billion years ago, how did the seeds of life come from? There is no definite answer yet. The transformation of organic matter into primitive life is a generally accepted view in the scientific community. However, no matter how hard scientists work, we cannot transform organic matter into life in the laboratory.
So how does nature do all this? It is still a mystery at present, or the most primitive life on the earth was not created by the earth’s nature itself, so it may come from space. Then what kind of form is the seed of life brought to the earth from space? Some people say that comets have brought the seeds of life to the earth, but after reading this article, perhaps we have to think another way: Could it be that the advanced alien life accidentally fell into the earth and brought the original seeds of life?