Can humans migrate to Mars?

At present, it is impossible for human beings to move to Mars, and there are still many obstacles.

First, Mars has no magnetic field, so it can't use the magnetic field to protect the harmful radiation in the universe like the Earth. About 4 billion years ago, Mars lost its global magnetosphere, and the current magnetic field is only a part of that year. The absence of magnetic field will cause the solar wind to directly contact the ionosphere, and the solar wind will gradually peel off the outer atoms, making the atmosphere thinner and thinner. Similarly, without the protection of the magnetic field, the sun's particle bursts and cosmic rays will directly reach the surface of Mars, which is very fatal to humans landing on the surface of Mars.

Second, the average temperature on the surface of Mars is very low. The average temperature is between minus 87 degrees and minus 5 degrees. The seasonal temperature varies greatly. The equator can be as high as 35°C in summer and as low as-143 C in winter. But to make matters worse, the temperature difference between day and night is very large, because the thin atmosphere can't store much solar heat energy. According to the record of Opportunity, in the same place, the temperature is 30 degrees Celsius during the day, but it drops to 1 10 degrees Celsius at night. Actually, it's okay Compared with other planets, it is already within the range of human existence.

Thirdly, the atmosphere of Mars includes about 96% carbon dioxide, 1.93% argon and 1.89% nitrogen, and a small amount of oxygen and other gases. There are a lot of tiny particles in the atmosphere, which are not only harmful to human body, but also harmful to electronic equipment. The key is oxygen, which is really our lifeblood. What should we do without oxygen? What may be needed is photosynthesis to transform it.

Mars is a very dry planet. Although water vapor is found in its atmosphere, its content is very small, only 1% of that in desert areas on earth. The atmosphere of Mars is very thin, with 96% carbon dioxide and almost no oxygen. The surface temperature of Mars is very low; There is no magnetic field on Mars, and there is no ozone layer in the atmosphere, so it cannot resist ultraviolet rays and all kinds of cosmic rays. All these factors indicate that it is difficult for life to exist on Mars. Besides, Mars is too far away from us to move.