Humans or trapped on earth? Scientists: astronauts’ ventricles dilate and cerebrospinal fluid circulation is obstructed

We live on the surface of the earth, we don’t need to wear special spacesuits and other protective equipment, but when we go to outer space, we need to wear spacesuits. If we were directly exposed to space, we might only survive for 1-2 minutes and die. In this process, we may face many problems: the expansion of the human body may even lead to blood vessel burst, blood boiling, hypoxia leading to lethargy, and finally freezing into popsicles at ultra-low temperature. Therefore, we see that when astronauts enter space, they will wear professional space suits, especially when working outside the cabin. < / P > < p > of course, even if you wear a spacesuit, astronauts will still face some problems that can’t be solved temporarily. For example, we will be subject to gravity on the ground, and astronauts in outer space are in microgravity or even zero gravity environment, which will bring some challenges to the life and even survival of astronauts. If astronauts go to the toilet in space, they can’t be as relaxed as on the ground. The whole process is very complicated and may even fly. Now researchers have found that in the microgravity environment in space, astronauts’ bodies have also changed. < / P > < p > scientists studied 11 astronauts living on the international space station and found that the fluid around their brains redistributes in their heads when they fly in space. This study confirms that the human brain is indeed affected in microgravity. On the ground, our body is subject to the gravity of the earth, so the blood will flow down naturally, and the heart can also transport the blood to the higher head, so the “power” of our heart has adapted to the gravity environment of the earth. If we live in microgravity or higher gravity environment, the flow of blood and cerebrospinal fluid may encounter obstacles. For example, on the surface of an outer planet with several times the gravity of the earth, our heart may not be able to quickly transport blood to the brain, and eventually there may be insufficient blood supply to the brain; in microgravity environment, blood will not flow down naturally, so the blood in the brain may be overstocked, leading to brain expansion. < / P > < p > in this study, the researchers used magnetic resonance imaging technology to study the brain condition of the 11 astronauts before entering space flight, after returning to earth for 9 days, and after returning to earth for 6-7 months, to observe whether the structure of the brain changes during space flight. The final study confirmed previous findings that an open structure of cerebrospinal fluid (CSF) occurs deep in the astronaut’s brain, which is the spatial expansion of the ventricles. Even if it shrinks back to earth, there is still more cerebrospinal fluid in the astronauts’ ventricles seven months later than before. < / P > < p > in the space microgravity environment, the astronauts’ brain changes. Can we human beings not leave the earth, only trapped in the earth? Although the astronaut’s body actually will appear some changes, but has no effect on the astronaut’s intracranial pressure. And now when we astronauts fly in space, a single mission time will not be very long, some astronauts may only stay in space for a few days and then return to earth. So the impact of these changes on astronauts may not be great. But if we want to go deep into the universe in the future, we will stay in the microgravity and zero gravity environment for a longer time, and our human body may change more. The impact of these problems really needs to be considered. For example, some time ago, scientists have selected 24 “super livable” planets from more than 4000 known exoplanets. According to the current “super livable” standard, these “super livable” planets basically meet four conditions, namely, suitable temperature, presence of water, etc. The researchers believe that living on these “super habitable” planets may be more comfortable than on earth. If we want to immigrate to these “super habitable” planets in the future, we may need to fly in space for a long time, because these “super livable” planets are very far away from our earth, at least more than 100 light-years. < / P > < p > for such a long distance, if we fly a conventional spaceship, it may take tens of thousands of generations of people to continue the relay flight to arrive. For example, voyager-1, which has been flying in space for more than 40 years, has not yet flown out of the solar system, and it is far from reaching other star systems. Of course, with the development of science and technology, in the future, our human beings will be more advanced. There may be new ways of space flight, or gravity may be created in spacecraft. At that time, we will be able to live and work in a spaceship with gravity as if we were on the ground. Yueshang group has become the third social e-commerce service platform listed in China after being gathered in pinduoduo