The "business trip" of the three astronauts is about to be full moon. The Manned Space Engineering Office recently released a video, announcing various small details of the on-orbit life of the Shenzhou 13 crew, including how to clean up the "kitchen waste" after meals and how to gargle in space.
Careful netizens will find that all three astronauts seem to have gained a lot of weight, even their weights are unnatural, or their facial edema will be more appropriate. Moreover, when reading Ba Jin's works, their voices sound a bit strange, as if their noses are blocked.
Do they have a cold? Why do you grow so fat in a month? What the hell is going on here? Let's talk about these issues.
Shenzhou XIII is about to be in orbit for a full moon, and three astronauts have successfully completed their first extravehicular mission. There are still five months before returning to the ground. They will eat jiaozi in space this Spring Festival.
Friends who often pay attention to the news of the space station may find that all three astronauts seem to have put on a lot of weight, especially their faces look even puffy. Are they fat or have other problems? In fact, this is not fat, but caused by the weightless environment of the space station.
In the space station about 400 kilometers above the ground, the biggest environmental feature of weightlessness, Wang Yaping's "soaring braid", is caused by weightlessness. Astronauts can lift or move objects effortlessly on the space station. This environment, which sounds cool, has actually brought great changes to the astronauts' bodies.
On the ground, human blood is transported to the whole body by the beating of the heart, especially to the brain against gravity, otherwise the brain will be deprived of oxygen. However, in the weightless environment of the space station, the pressure on the heart to deliver blood has not decreased, but it is no longer necessary to resist gravity, so it will be easier to deliver blood to the head.
Moreover, the blood in the head will not automatically flow downward, so a large amount of blood will gather in the head, making the astronaut's face look swollen. In addition to swollen face, too much body fluid in the head can also block people. Find a place to stand upside down and you'll know what it's like to have congestion in your head!
Of course, this symptom will not last forever. With the extension of the on-orbit time, the astronaut's heart muscle will contract slightly, and the brain will also issue instructions to redistribute body fluids and reduce blood appropriately.
In other words, the blood circulation system of astronauts will change to adapt to the weightlessness of the space station. This change has a process. Once the heart beats and the blood volume reaches a balance, the astronaut's face will be relieved.
Therefore, the weight of the three astronauts did not increase, but the uneven distribution of body fluids caused by weightlessness led to a slightly bloated face.
At the same time, facial congestion can also cause occlusion, which sounds like a cold. This is actually a very normal phenomenon, so don't worry too much.
Since the swelling of the face after one month in orbit is caused by weightlessness, will they really gain weight after six months in space mission? The answer is no, the three astronauts will maintain a relatively stable weight.
The first is diet. Whether you can gain weight is related to what you eat. Although the three astronauts can't play hot pot in the space station, there are more than 20 kinds of space food in China, so you can choose what to eat according to your own taste.
Space food is carefully prepared, which not only has good taste, long shelf life and rich nutrition, but also can cause the lack of trace elements according to the space environment, and properly supplement the nutrition to the food. How much nutrition, energy and fat these foods can supplement are carefully configured, and astronauts will not get fat because of eating.
Secondly, physical exercise. Astronauts should carry out at least 1-2 hours of physical training on the space station every day, which can alleviate the physical changes caused by weightlessness in space and help enhance the cardiovascular function of astronauts. Physical exercise every day is energy consumption, which is beneficial for astronauts to maintain a stable weight.
In addition, astronauts have to complete scheduled space missions every day. Our seemingly relaxed space life in the video is actually a great challenge for astronauts. It is inconvenient for them to live in the space station. How can you gain weight easily under such inconvenient life and task pressure?
In short, the three astronauts of Shenzhou XIII will not gain weight easily after half a year in orbit. Their daily life will be adjusted with more physical indicators, and their physical condition will remain in a relatively stable state, as will their weight.
Astronaut Shenzhou XIII lived in orbit for six months. In addition to the early facial edema, there are many physical changes, such as muscle atrophy and bone loss, which are caused by weightlessness.
On the ground, for the sake of defying gravity, the corresponding muscles of the human body will be in a state of tension. For example, when standing or walking, the muscles in the legs and spine are tense. However, in the weightless environment of the space station, astronauts no longer need defying gravity, and the muscle tissue on it will be in a state of relaxation for a long time, and it will contract after a long time. For example, after lying in bed for half a year, you can't stand normally on the ground.
The same thing will happen to astronauts' bones. Defying gravity is not needed for bones in legs, spine and other parts, so the lack of proper stimulation will stop the growth of new bones and cause bone loss.
Research data show that after six months in weightlessness, astronauts' muscles will shrink by about 40%, and the bones lost every month are equivalent to that of an old man on the ground for one year. This is also the reason why the three astronauts of Shenzhou 12 can't stand and walk when they return to the ground. Their bodies have undergone great changes.
However, in view of these problems, scientists in manned space engineering have corresponding preventive measures. In addition to carefully preparing space food, astronauts' daily space exercise is the most important.
Three astronauts should do at least 1 2 hours of physical training in the sports area of Tianhe core cabin every day. The space station is also equipped with exercise equipment such as a space treadmill, a space bike and a resistance tension rope. Astronauts can greatly alleviate the degree of muscle atrophy and bone loss through exercise.
In short, when astronauts perform long-term on-orbit tasks, in order to adapt to the weightless environment, many aspects of their bodies will change, and the efforts they make are enormous!
Shenzhou XIII is about to have a full moon in orbit, and the three astronauts have created many great moments for China's manned spaceflight project. Wang Yaping, a female astronaut, became the first woman to enter the space station in China and the first woman to walk in space in China. She will continue to create many firsts in the future!
In all kinds of "dialogue between heaven and earth" videos, we can all hear the reports of three astronauts "feeling good", and everyone can rest assured of their physical condition.
However, the "feeling good" of astronauts in orbit only means that everything is normal, but it does not mean that they will feel comfortable. In the weightless environment of the space station, discomfort is the norm!
Finally, I would like to pay tribute to the great astronauts who have created great moments again and again for China's manned spaceflight!