Disadvantages of Martian immigrants

It is said that the United States is the first and only country to send astronauts to the moon. If the United States is willing, it is fully capable of developing the moon first. Although the moon belongs to all mankind, as the first country to land on the moon, the United States has a great say in the development of the moon. However, the United States put the moon so close to it instead of developing it. Instead, it wants to send astronauts to Mars first. Does this mean that it doesn't want to develop the moon? The moon has so many advantages, but it also has fatal disadvantages. There is no atmosphere on the surface of the moon, the temperature difference between day and night is large (more than 300 degrees), and there is no water resource. Even if there are compounds, they need to be extracted. .....

But the moon is really a good classroom for us to practice in deep space, where all our skills will be thoroughly tested and the cost is not high compared with the real deep space! Mars has water ice and carbon dioxide dry ice, which can be used to synthesize methane fuel. Iron Man Musk's Mars landing plan is to make fuel on Mars and then come back. Although it seems a bit unreliable, it shows that it can still be operated!

There is nothing illogical about exploring space. Exploring the moon and Mars is not contradictory, but in the current context, which is more valuable and which is the most suitable.

However, the United States is also planning to return to the moon, and Europe is also planning to build a moon village on the moon. China also has the follow-up missions of Chang 'e V, Chang 'e VI and Chang 'e VII, as well as the missions of landing on the moon and building bases. Eat the rice bit by bit, and plan to come one by one.