Is the space suit really just radiation protection? A spacesuit price is over 30 million, making it the most expensive clothing in the world.
The key is that the clothes are fixed in the number of times and cannot be saved, otherwise it will endanger the lives of the astronauts.
Astronauts return to Earth
What will happen if the astronauts don’t wear space suits in the sun?
After any experience humans have gained in space, the efforts of astronauts are behind it, and the importance of space suits is a lesson learned by astronauts with their lives.
Astronauts set out to fight for
harsh universe
Earth's environment is the most comfortable in the entire solar system, and humans can even wear clothes on the earth.
However, without the earth's environment, humans cannot withstand with their own body.
The space environment has three major dangers that humans and even life on Earth cannot overcome. They are huge temperature difference, radiation and vacuum environment .
If a person enters space without wearing any space suit, what will he face?
space environment
First of all, there is a huge temperature difference. In space, without the protection of the earth's atmosphere, people will be directly illuminated by the sun .
At this time, the temperature of people will rise to more than 200 degrees Celsius , which is equivalent to frying directly in a oil pan. The fat in the human body will melt, and the body tissue of will be directly roasted .
When facing the sun, the temperature drops sharply, and the temperature to space is minus 270℃ , which is the closest existence to absolute zero.
The body that was just roasting, was placed in a large "freezer" , and the body was frozen and stiff.
is like this. People will circulate the earth under the gravity of the earth, and will accept the alternation of hot and cold in their orbits. In this case, people will have died long ago.
Direct sunlight in space
But what is even more desperate is that people did not die because of the temperature difference. The second the human body contacted the space environment, people might explode, was "antied to death" by themselves .
There is no air in space, but people have in their belly. As earth creatures, air exists in their bodies.
When human goes from plain to plateau, altitude sickness will occur. One of the symptoms of altitude sickness is bloating head and stomach bloating . It feels like you are going to be supported to death. This is actually the air in in the human body is at work.
The air pressure on the plateau is lower than that on the plains . In order to maintain balance, our bodies are under pressure. The intensity of the pressure is related to the environment in which the person is in.
Plateau reaction
Generally speaking, the gap between the atmospheric pressure of is not big at altitude below 1000 meters, so we have almost no impact on the plains.
But once you go to the plateau, the air pressure difference between is too large , and the air in our body cannot be changed at will, it will take a process.
This process varies from person to person . Some people can quickly balance the pressure inside and outside of their bodies on the plateau, while others take a long time.
If you have a long time, various adverse reactions will occur, which are called altitude sickness .
Similarly, the air in the human body on the plateau is lower than that in ordinary areas. When they come from the plateau to the plain, hypoprotoreaction will occur.
Packaging bag expands in the plateau environment
If the astronaut does not wear a space suit, entering space is running from the standard atmospheric pressure to the environment of 0 atmospheric pressure . The human body will expand due to the internal pressure, and eventually the cells in body will be expanded to .
This process lasts for only 30 seconds , and the human body fluids will boil, just like it is boiling, organ explosion .
Vacuum is the deadliest existence in the universe. In front of it, radiation is no longer the deadliest .
Most of the radiation in space is solar radiation, which is a high-frequency radiation generated by the polymerization of the sun's hydrogen atom .
Radiation will cause the body's cells to mutate and suffer from cancer. However, compared with the vacuum instantly taking human life, the mutation generated by radiation is no longer terrible.
The radiation of the sun
The experience of life
The first person to see that the cruelty of the space environment is not a human, but a puppy, its name is Leica .
Leica is an experimental dog . It entered space earlier than humans, with the purpose of testing what will happen after organisms enter space.
Although Lycra is placed in a capsule similar to a capsule, it can be seen from the data sent back by Lycra that it is still in pain.
Lycra's body is under the huge acceleration of the Rocket , which is a huge damage to its thin body. After
entered space, the temperature in the cabin rose rapidly . Leica could not withstand such high temperatures and died shortly after entering space.
Space Dog Lycra's statue
Its body and the Sponik-2 that transported it are still running in the Earth's orbit , but astronomers believe that the dog may have been gone for a long time.
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Another space animal passenger chimpanzee ham is lucky than Leka. He returned to Earth alive, but his life span was halfway after he came back, and died young .
After them, humans entered space, and humans also developed from simply entering space to landing on the moon. However, bad luck still came to astronauts.
space chimpanzee Hamm
Space suit lessons
Many people are curious. It is obvious that return capsule is not vacuum , so why do astronauts wear space suits? This requirement was exchanged for Soviet astronauts' lives.
In 1971, the Soviet Union's Alliance No. 11 successfully connected with the space station . This was the first time that humans entered the space station, so it was of great significance.
After completing the mission, the three astronauts returned to Earth according to the prescribed plan, but because the return capsule was too crowded, they had to take off their bloated spacesuits .
Solution No. 11 squeezed into a narrow return capsule
originally thought that had maintained a normal air pressure in the return capsule , and it was not a big problem not to wear a space suit. But who would have thought that 's luck mentality ruined the lives of three astronauts .
During the return process, a small part of Alliance No. 11 was shaken off, and the small part of is related to the valve of the entire return capsule.
As a result, Alliance No. 11 leaked , and the return capsule was directly connected to the space environment, becoming a vacuum, and the air pressure of dropped to 0.
The accident occurred 40 seconds later, , astronaut lost his vital signs , and the return capsule landed according to the program set to implement. The rescuers found the astronaut who had not breathed long ago in the capsule.
stamp commemorating the three astronauts
The status of the three astronauts can only be described in the words of tragic. Their faces are ferocious, and the blood in the body is in a bubble state , which is obviously boiling.
was held accountable afterwards, and it was considered that the space capsule was unreasonably designed , and the space the astronauts took to wear the space suits was not considered, which led to the three astronauts taking risks and taking off their space suits, causing a tragedy.
After that, the return capsule has been widened to , and it is strictly stipulated that astronauts must wear aviation suits throughout the entire process of launch and return.
space suit can isolate the temperature of the universe , maintains the pressure inside and outside the human body , and even in a vacuum universe environment, it can protect the safety of astronauts.
Even in the return capsule, astronauts must wear space suits
Astronauts' occupational disease
However, space suits are not omnipotent . As long as the astronauts enter space, they will inevitably have physical changes.
There are many changes in this. caused by weight loss in , and the most common one is osteoporosis .
The longer the astronauts stay in space , the more calcium the bones will lose, , and this loss is irreversible . No matter how many calcium tablets are taken afterwards, it cannot make up for the lost calcium.
Therefore, every astronaut tests bone age , and they will lose calcium by more than 10 years old than the original age. The speed of loss of calcium is 10 to 15% faster than that of ordinary people.
Weightless environment in space
In addition to the changes in bones, the eyes of astronauts also have changes in , especially the convex lens in our eyes - lens , which will be lengthened after entering space.
This process is also irreversible. After the astronaut returns, the vision of will weaken .
Astronauts all come from pilots. If an astronaut who has been performing space missions for a long time comes back, he will basically never be able to fly the plane again.
The predecessor of the astronaut was fighter pilot
In addition, the muscles of astronauts will also shrink to varying degrees , because weight loss changes their way of exerting force. Humans accumulate a large amount of muscles in the lower body because of walking upright.
cannot walk in space like on the ground. The exercise obtained by lower limbs weakens . In a short period of time, the strength only becomes smaller. will cause muscle atrophy over time .
Before entering space, the astronaut's body was the best among humans; after returning from space, the astronaut was covered with injuries.
What's more, in human history, there are 22 astronauts who have dedicated their lives to the human space cause .
The monument on the moon - the fallen astronaut
salutes these great astronauts and thanks for their exploration.
