Humans want to emigrate to the moon and Mars, why not start with something relatively simple, such as transforming the desert?

Because emigrating to Mars can promote the development of human science and technology, it is very simple to transform the desert after human beings can develop.

So do you know how difficult it is to immigrate to Mars?

Mars is one of the nine planets in the solar system and the fourth planet arranged from near to far from the sun. Because the rocks, sand and sky on Mars are all red, to the naked eye, Mars is a striking lux planet, which is also the origin of its Chinese name.

In Chinese, the name of Mars is reminiscent of "fire" and heat, but in fact, this red planet is extremely cold and dry. Nevertheless, Mars is still the most similar planet to Earth in the solar system.

In the past 30 years, scientists have found that today's Mars once had an active volcanic period, with huge craters formed by meteor impact and traces of instantaneous flood erosion.

Another strange thing about Mars is that unimaginable storms blow every year, and the wind speed is indescribable. The wind speed of big typhoons on the earth is more than 60 meters per second, while the wind speed on Mars is as high as 180 meters per second.

Great storms sometimes sweep the whole planet. Sandstorm on the surface of Mars is a unique phenomenon in the atmosphere of Mars, and Mars is covered with flying sand for14 of the year.

The average temperature of Mars is minus 23 degrees Celsius. Due to the thin and dry atmosphere of Mars, the temperature difference between day and night is very large, which is much larger than that on the earth. Due to the low surface temperature and low air pressure on Mars, carbon dioxide and water in the atmosphere are almost saturated. As long as the temperature drops slightly, carbon dioxide and water vapor will condense.

There is little water in the atmosphere of Mars. Scientists estimate that if all the water ice on Mars melts into water, only an ocean with a depth of 10 meter can be formed on the surface of Mars. Compared with the vast ocean on the surface of our earth, the water on Mars is negligible.

"Moving to Mars" has always been a classic scene in various science fiction films. If you really want to survive on Mars, what key problems need to be solved?

The first is two kinds of radiation problems. One is the low dose but long-term existence of galactic cosmic rays. High energy and strong penetration make it difficult to protect them. Ordinary spacecraft shell basically can't stop. Even the 30 cm thick aluminum plate has extremely limited protective effect, which seriously threatens human health.