How long does it take to immigrate to the moon?

Recently, the United States announced the official logo pattern of "Al themis Project" and officially announced that it would establish a permanent base on the moon.

Regarding this plan, NASA official website explained it this way: "She is the twin sister of Apollo and the goddess of the moon in Greek mythology. Now, she personified our road to the moon and became the name of NASA's plan to return astronauts to the surface of the moon in 2024. "

According to the plan, the United States will arrange for a man and a woman to land on the south pole of the moon by 2024; Establish a lunar base by 2028. Establishing a base on the moon is only the first step, and the ultimate goal is to go to Mars or other Ad Astra.

In short, Americans have begun to prepare for future space immigrants, and the moon is just a transit station. As early as many years ago, many people have conceived and begun to explore the matter of space immigration. In 2002, Musk established Space Exploration Technology Company (Space Exploration Technology Company) and began to work hard to reduce the cost of space transportation and colonize Mars.

Musk once said, "If we control the cost of everyone moving to Mars at around $2 million, we can create a big market." However, after more than ten years, although Musk has done a lot of work in space transportation, it is still far from the colonization of Mars.

This time, NASA's first step from the moon is also a compromise idea. Of course, the estimated cost of such a plan is not low. It is estimated that the Al themis Project will cost 20 to 30 billion dollars.

Want to build a permanent base on the moon, in addition to the huge amount of money mentioned above, there are naturally many technical conditions. Because building a base on the moon is different from launching a space station or living quarters from the earth, the real base must be built on that land.

As we all know, the moon is short of materials, limited conditions, weightlessness, radiation, low temperature and high vacuum, all of which are very difficult to start from scratch. Different from the earth, in primitive society, people can use local materials, such as drilling wood to make a fire and tying ropes to record things, but in order to settle on the moon, all basic materials have to be transported from the earth.

In the past, transportation tools, materials and other materials needed to learn basic technology. Take power generation as an example. At present, the space station is powered by solar panels, but the lunar base can only use solar panels as auxiliary power supply equipment. Because a day on the moon is equivalent to a month on the earth, and a night on the moon is equivalent to half a month on the earth. Coupled with the low temperature at night, it is a bit dangerous to expect to store electricity overnight. The moon does not have the conditions of hydropower and wind power generation on our earth, so it is necessary to study new power generation technologies.

In addition, there are many complicated obstacles, which is why many people can't understand why they want to build a base on the moon. Nearly 50 years have passed since 1969, when man landed on the moon for the first time, and 1972, when he landed on the moon for the last time. No one has set foot in that field, including China.

Some people say that it is because the moon has no available value at present. Even if astronauts are sent up, all they can do is take pictures and take samples, and the money spent is still huge and completely unnecessary.

This idea is tantamount to sitting on a well and watching the sky. The earth is the cradle of human beings, but human beings cannot live in the cradle forever. Although space migration sounds unrealistic and costly, research can't stop. Of course, we don't have to rush. Step by step, slow and steady is the most correct choice.

Maybe one day, when we look up at the starry sky, we can tell our descendants that there are not only Chang 'e on the moon, but also real human beings. what do you think?