In view of Musk's plan to build a city on Mars, why do some people say that even immigrating to the Sahara desert is more useful than immigrating to Mars?

Landing and emigrating to Mars is at least something that all rockets in the world can't do at present. After Saturn V retired in the United States, there were not even heavy rockets that manned the moon. We should land on Mars. What? America's official Mars landing plan is in ten or twenty years. How dare the space exploration technology company say that it will immigrate 654.38 million+00,000 people to Mars in six years? Such a technology company really needs to make some gimmicks to attract funds, but it is sheer nonsense to say that 65,438+0,000 people will emigrate to Mars in six years. People are not fools.

I don't know where the subject saw this news. It must be made up or I remember it wrong. Migrating 1 10,000 people to Mars is a huge systematic project. Mars has a harsh environment, no shortage of food and ready-made water. Where so many people go to live is also a big problem.

It can be said that in six years, with the cooperation of all the space powers in the world, it is basically impossible to immigrate 1 10,000 people to Mars, so it may take hundreds of years to realize large-scale immigration to Mars. Now it is basically impossible to expect rockets burning chemical fuels. Mars is the only planet where human beings can migrate at present. Its gravity is a little over one-third of that of the earth, its mass is about one-tenth of that of the earth, and its surface area is about the land area of the earth.

It also has a thin atmosphere, and the air pressure is about 0.6% of the earth's atmosphere. The most important thing is that there is more water, the temperature is not very harsh, and the temperature difference between day and night is large, from-132℃ to 28℃. Compared with other terrestrial planets in the solar system, it is a paradise. As long as humans can restore the atmosphere of Mars and make greenhouse gases reach a certain level, Mars can be transformed into another earth. Mars once had a dense atmosphere, as well as oceans and rivers. However, due to the disappearance of Martian geomagnetism, the solar wind took away the atmosphere of Mars, making Mars what it is now.

Although the earth has various problems, it is still the only place in the universe that can support life. Even the Antarctic and Sahara deserts are much better than Mars, Europa and Titan. As long as there is one-tenth of the workload and cost of emigrating to Mars, we can protect the earth's environment.