Nearly half a century has passed, why don't people go to the moon anymore? Is it true that Hawking warned not to go to the moon?

The moon is the largest celestial body closest to our earth. Since ancient times, we have many beautiful legends about the moon, and some scholars have written many beautiful sentences praising this bright and flawless moon. Because the moon is close to the earth, it is still difficult for human beings to explore and land on the moon. More than 60 years ago, mankind successfully launched the first lunar probe "Moon 1", flew near the moon and measured some data of the moon. 1969 On July 20th, man set foot on the surface of the moon for the first time. Astronaut Armstrong was the first man to land on the moon in the world. By 1972, after Apollo 17 returned to Earth, the Apollo manned moon landing program ended. Today, we humans have not sent astronauts to the moon in the past half century. Why not go to the moon again? Is it true that Hawking once warned against landing on the moon?

There are many doubts about Apollo manned landing on the moon. One of them is that Apollo's landing on the moon was a "scam". The astronauts failed to land on the moon, and all the public film materials were shot in the studio. Another focus is mainly why we haven't landed on the moon again for so long. In particular, at present, our Chang 'e-5 probe went to the moon to take samples, and some photos sent back from the moon are quite different from those taken by Apollo when he landed on the moon. For example, the flag displayed by the Chang 'e-5 probe on the moon is very flat, while the flag planted by Apollo astronauts on the moon is wrinkled and looks like "flying in the wind". Therefore, during this time, many netizens are also arguing about these differences and think that Apollo's landing on the moon is a "scam." In fact, the reason for this difference is that the materials and techniques of these flags are different, so the effects are different.

As for why we didn't go to the moon again these years, the reason is actually relatively simple. At that time, the United States paid a huge price for manned landing on the moon, which lasted 1 1 year and cost 25.5 billion US dollars, accounting for about 0.57% of the US GDP. If the GDP of the United States in 20 19 is about 2 1 trillion dollars, then the investment of 0.57% GDP is more than 1000 billion dollars, which is roughly equivalent to the cost of seven latest Ford-class aircraft carriers in the United States. It is impossible to build a Ford-class aircraft carrier every year now. The reason why the United States can invest so much money to promote manned landing on the moon is that the United States lags behind the Soviet Union in many aspects of the space field. In order to prove its strength, the United States had to do its best to carry out Apollo manned landing on the moon, so it had to invest so much money. Now, it is impossible to spend so much money to go to the moon in a short time.

After Apollo astronauts successfully landed on the moon, their main goal was achieved, that is, to become the first manned country in the world. In addition, when the Soviet Union abandoned the manned moon landing program, there was no need for the United States to continue to maintain the moon landing program. After stopping manned landing on the moon, the United States invested in other research, such as building a world-famous space shuttle and launching some interstellar probes, such as Voyager 1 and Voyager 2. If we continue to indulge in manned landing on the moon, these projects are estimated to be impossible.

Nearly half a century later, man did not land on the moon again. Some netizens speculated that there might be "aliens" on the moon. When astronauts meet them on the moon, humans dare not land on the moon again. There are some sayings that the famous scientist Hawking also warned us not to go to the moon. Are these statements true?

As mentioned above, one of the reasons for not going to the moon again is that it is too expensive, and if people continue to go to the moon frequently, the United States can't afford it. As for whether there are alien bases and aliens on the moon, there is no way to talk about it. Although humans have not landed on the moon for half a century, many detectors have explored and scanned the moon in all directions, and the so-called lunar base can't be hidden at all. For example, the size of Chang 'e-5 probe is relatively small. After the combination of lander and elevator landed on the moon, the American Lunar Orbit Survey Vehicle (LRO) photographed the lander, and if the moon has a base, it will also be found.

And did Mr. Huo warn people not to go to the moon? In fact, there is no relevant report. On the contrary, Mr. Huo thinks that we human beings should go out of the earth and go deep into the universe in the future. Because the resources of the earth are limited, when our human civilization reaches a certain level, the resources of the earth will be scarce, which will eventually limit the sustainable development of mankind. So going deep into the universe can avoid conflicts such as resource competition. As the largest celestial body closest to our earth, the moon may be the first stop for mankind to walk out of the earth in the future.

Although the moon is a big satellite, not all areas are suitable for us to use. In the future, we need to consider many factors when building a base on the moon. Lev Zeleni, director of the Space Research Institute of the Russian Academy of Sciences and academician of the Russian Academy of Sciences, said that there are not many places suitable for the moon to build bases. These bases should be built in the southern hemisphere of the moon, because these areas are rich in water resources and can solve the problems of water and fuel. In addition, we need to consider the terrain, and we need to find some relatively flat places to facilitate the take-off and landing of the spacecraft. Because there are fewer areas suitable for building bases, the competition for the moon may be very fierce.

Maybe, there is no good place if you come late. Imagine that if someone goes to the moon first and builds a base first, it is obvious that the latecomers can't tear down their base and rebuild their own. When a good place has been built, latecomers can only be forced to choose other relatively poor areas. Therefore, more and more countries are now involved in the exploration of the moon. India, Israel, the United Arab Emirates and other countries are all making plans to land on the moon. Perhaps there are also considerations in this regard.