What are the life risks of human migration to Mars? For these reasons, he may not live for two months.

So far, considering many factors, Mars is the best choice for human migration in the whole solar system. Scientists all over the world also agree that there is a great chance for human beings to move to and live on Mars in the future. However, the feasibility in theory cannot be compared with the real situation in practice.

With the development of modern science and technology, our exploration and research on Mars are also deepening, and the information and materials obtained from it are becoming more and more diverse and valuable, thus helping mankind to achieve the goal of landing on Mars and moving to Mars to the maximum extent. But understandably, moving to Mars is a long and arduous process. Once people go to Mars, they will face all kinds of life-threatening risks.

Among them, the biggest problem and danger for human beings is radiation. The earth we live in, because the core contains a lot of active iron, can form a strong magnetic field on the surface of the earth. It is with the protection of this magnetic field that the earth will not be affected by the harmful radiation of the sun and the violent activities in the depths of the universe. Unfortunately, there is basically no magnetic field on the surface of Mars, and it is almost completely exposed to space, which makes the radiation on Mars very intense and inevitable. So far, scientists have not found appropriate means and methods to prevent radiation.

When human beings go to Mars, there are mainly two kinds of radiation harmful to life: one is galactic cosmic rays, which are small in quantity and low in dose, but exist for a long time and cannot be avoided at any time. Moreover, ordinary spacecraft can't stop these rays at all, even 30 cm thick aluminum plates can't stop them, and the protective effect is minimal, and the rays seriously endanger human health. Another kind of radiation comes from the dominant sun of the eight planets in the solar system.

This kind of radiation is mainly high-energy particles produced by the sun's own activities, which can be effectively protected by the spacecraft's shell, but it will still cause many terrible diseases, such as cancer, central nervous system damage, cataract and so on. The picture on the next page shows the impact of space radiation on the earth, and actually on Mars. Reliable data show that the cumulative radiation received by astronauts on Mars is equivalent to receiving a full-body CT scan once a week. During a routine trip to Mars in 180 days, the radiation received by astronauts is equivalent to the cumulative radiation received by an employee who has worked in a nuclear power plant for 15 years. Therefore, before greater progress is made in radiation protection technology, human beings can only stay on Mars for a short time.

Living on Mars for a long time is obviously extremely dangerous. In addition to the harm of radiation to human beings, the low gravity of Mars is also one of the threats to human life. We human beings live under the gravity of the earth, and the physiological indexes of the body can only adapt to various physical conditions on the earth. The gravity on Mars is only 40% of that of the Earth. Walking on Mars, just like walking in water, is in weightlessness for a long time.

Such weightlessness will change the distribution of water in human body, reduce the volume of plasma and lose intracellular fluid's body. More generally speaking, it will reduce the concentration of liquid substances in the body; It will also make the cardiovascular function in the human body abnormal, lead to the variation of lymphocyte antibodies, and thus induce osteoporosis, muscle atrophy, decreased immunity and other diseases.

If the radiation hazard on Mars can be changed and protected through the development of science and technology, then we humans seem to be powerless to the gravity of Mars itself. Of course, there is still a long way to go in the future, and human wisdom is infinite. Overcoming the weightlessness of Mars will come true one day. Living on Mars, the two major life risks facing mankind-radiation and weightlessness-are inevitable at least at this stage. Other secondary hazards can also threaten people's lives, and we can't easily ignore them.

Earlier, we introduced the atmosphere of Mars, where there is almost no oxygen. Oxygen is the most important thing to maintain life, but it is full of some toxic gases. Although the content of these toxic gases is very small, human beings who have lived on Mars for a long time still can't get rid of the harm caused by toxic gases, and their lives will be in danger in the long run. In addition, the large temperature difference between day and night on Mars is also an aspect that affects human life.

In just one day, we will accept the temperature transition from summer to winter on the earth, which will undoubtedly bring a heavy and painful burden to the body: the rapid loss of water in the body, the extreme coagulation of blood in blood vessels, and the violent destruction of cells in the body, all of which will cause fatal injuries. Although Mars looks similar to the earth, it is actually full of dangers, and there is little room for human beings to live safely.

We still have a long way to go before we want to move to Mars. An internal report of NASA focuses on the risks faced by astronauts in carrying out space missions, especially when humans land on Mars, and makes relevant life risk prediction and early warning.

The hazards mentioned above are all objective conditions that human beings need to face on Mars. In addition, there is a subjective life risk that we humans must solve-food. The surface of Mars is dry and hard, covered with dense gravel, just like the desert on earth. This kind of soil is almost barren, and the whole of Mars is desolate, and there is no food supply for human survival. And if human beings want to live on Mars, adequate food and water are necessities. Of course, we can transport food from the earth to Mars, but this journey takes too long, and it will take six months to a year at the earliest, which will undoubtedly cause food shortage for Martian immigrants to some extent. In this way, if there is not enough food to supplement the body's energy, human beings will induce anemia, hypoglycemia, gastroenteritis, diarrhea and other diseases due to malnutrition, and even life-threatening in severe cases.

To sum up, these risks, large and small, are all human beings have to accept after moving to Mars. On the earth, we are used to a safe and quiet life, and the human body has also adapted to the environment and conditions of the earth. After all, Mars is a strange and dangerous new field, and it is not a place where human beings can coexist peacefully in a short time. In particular, many life-threatening risks are inevitable, so really think twice.

Moving to Mars is the great goal of all mankind, and the realization process is long and arduous. Before earth science and technology can eliminate or weaken the life risks brought by Mars to human beings, what we need to do most is to protect and build our earth, which is the most important thing. However, with the rapid development of modern science and technology and the deepening of Mars exploration, when Mars is slowly "transformed" into another earth by human beings, our desire to move to Mars will naturally come true.