Starting from the first human landing on the moon in 1969, the United States completed a total of 16 moon landings by 1972.
But to this day, time, except for these 
clearly recorded lunar landings, no human being has ever set foot on the moon.
Photos of the U.S. Apollo 11 moon landing
Some countries may be hampered by science and technology, but even the United States, which completed moon landings in 13 years in the past, has not done so in the past fifty years. Send people to the moon.
Is there some mysterious power of or on the moon? Or is it that mankind's first moon landing was an scam ?
made me turn my attention to the moon and the past to see why humans no longer set foot on the moon in person.
Pictures of the moon directly observed from the earth
The Moon of Mutual Creation
The moon, or the moon, as long as the night falls, we always have the opportunity to find its eye-catching figure in the deep sky.
As the fifth largest satellite in the solar system, the radius of the moon is only one-fifth that of the earth, and its mass is less than one-tenth that of the earth. Its biggest feature is that it revolves around the earth. Rotate.
There is a big difference in size between the moon and the earth.
There are different opinions about the origin of the moon. Some hypotheses speculate that the moon is actually one with the earth. Later, the collision between meteorites and the earth caused the moon to separate from the earth. There are also arguments that the moon and the earth may have separated themselves from the earth. The solar system existed independently of each other when it was formed. Later, the moon was captured by the earth's gravity and slowly became a satellite of the earth.
But no matter which theory it is, compared to other planets whose distance is measured in light years, the moon is indeed the planet closest to the earth , and its distance is only .3844 million kilometers.
This not only makes it the first alien planet where we humans know , but also one of the few alien areas where we can directly explore .
The moon is the earliest planet observed by humans.
The surface of the moon is dotted with a large number of vast plains formed by basalt melt flows erupted by dark volcanoes. Today we call it "lunar sea".
However, although the name refers to the sea, in fact there is not a drop of water in it. It is full of various minerals and rare elements .
There are many craters left by meteorite impacts on the surface of the moon
At the same time, because the moon is also affected by the gravity of the earth, there is a " tidal lock" phenomenon. The most intuitive response to this phenomenon is the planet's own rotation and revolution. The periods of are equal, so a certain side of the moon will always face us . This also causes the phenomenon of always night in some areas of the moon.
Since ancient times, we humans have learned how to observe the moon, and used its laws to deduce many scientific theories. The prayer to land on the moon not only exists in many myths and stories, but has also been rooted in it since then. It's in our genes.
Apollo 11, mankind’s earliest moon landing spacecraft
The stage of the moon landing
Moon landing has always been a great wish of mankind to explore space, but any human action is often not enough to push it towards reality.
In the 1940s, with the end of World War II and Churchill's Iron Curtain speech, the world has been divided into two parts since then, with Europe and the United States on one side, the Soviet Union on the other. The " Cold War " without gunpowder has just begun.
The Cold War between the United States and the Soviet Union began in the 1940s.
Different from ordinary wars involving blood and fire, the Cold War was a disaster for mankind. It was also an opportunity..
During the decades of the Cold War, humankind's technological level grew almost geometrically. It was an era when almost several or even hundreds of new technologies appeared every day.
And our mankind’s thousand-year dream of landing on the moon is realizing on this crazy stage.
During the Cold War, the Soviet Union invented the laser pistol for use in space. In 1955, the United States took the lead in proposing a plan to launch probes into space. However, in 1957, the Soviet Union was one step ahead, opening the first year of the human universe. .
This man-made object sent into Earth orbit by the Soviet Union made the entire United States at that time full of uneasiness and anxiety .
"What would happen if that was a nuclear bomb ?" This is the common thinking of people during the Cold War. Under this pressure, the space race between the United States and the Soviet Union officially kicked off.
During the Cold War, the world was shrouded in nuclear crisis.
A year after the Soviet Union launched the satellite , the United States also successfully launched its own artificial satellite , and in the same year established the now-famous " NASA " ( NASA).
Not to be outdone, the Soviet Union once again took the lead in 959. The United States launched the world's first lunar landing probe "Luna2", and two years later, in April 1961, it sent Soviet astronauts especially Ri Gagarin was sent into space, becoming the first country to complete a manned Earth orbit flight.
It was only three months after that the United States sent its second astronaut, Alan Shefford, into space. After these rounds of competition, in terms of scientific and technological achievements, the two countries are almost equal, but in terms of achievements, the United States is undoubtedly the leader. failed .
The first human being to enter the universe - Yuri Gagarin
So, in 962, the then President of the United States Kennedy delivered a speech that was enough to influence human space exploration - " We choose to land on the moon " .
But the irony is that only a year before , , Kennedy killed the moon landing plan because the space project invested too much budget . It was also the success of Gagarin that made the Americans I had to choose this moonshot plan of overtaking in a corner.
Kennedy delivered a moon landing speech
Set out for the moon landing
In that era when did not have the powerful computer computing power of and did not have advanced AI, many technical aspects of the moon landing had to be operated and recorded by humans, and about For a lot of knowledge about space navigation, people are only at a stage where they have just started to understand it. Conditions like
undoubtedly made the moon landing plan a lot more difficult. It can be said that under the conditions at that time, the moon landing was a crazy plan of suicide and .
NASA headquarters in the United States
In the initial experimental phase of the Apollo program, in order to test the performance of Apollo 1, three astronauts were burned alive due to an accident. The cause of this tragedy was simply because of the tight schedule of the project, Researchers mapped quickly and ignored the safety hazards of the spacecraft .
It was in such tragic experiments that the United States launched a total of four Apollo manned spacecrafts in 1968 and 1969, and completed multiple flights around the earth. mission to the moon.
Photos of the moon taken by American astronauts while orbiting the moon
Later on On July 16, 1969 , Apollo 11 carried astronauts Neil Armstrong , Buzz Aldrin and Michael Collins and three people successfully landed on the moon.
After that, Armstrong also took the famous " One Giant Step for Mankind ", completing mankind's thousand-year dream of landing on the moon, and regaining 10% for the United States in the competition between the United States and the Soviet Union.
Armstrong took a big step for mankind on the moon.
After the successful moon landing, the United States launched a total of manned spacecraft to the moon in the following 3 years, , including Apollo. On the 13th, was accidentally damaged by , and other spacecraft successfully delivered 112 American astronauts to the moon to complete the moon landing.
It can be said that this time the moon landing plan of the United States is crazy , at all costs, but perhaps it is because of this that we humans can have the opportunity to set foot on the moon in person.
Astronauts planted a flag on the moon to announce the success of the landing plan
An expensive step
Since the United States has been able to complete several moon landings within 13 years, why does the United States no longer send people to the moon?
There are not a few people who want to ask such questions. Some people even suspect that the American moon landing is a fake show .
Many parties have questioned that the U.S. moon landing was suspected of being filmed in a studio.
However, judging from the background of the time and subsequent scientific research results, there is almost no possibility of fraud in the U.S. . If the U.S. dared to fake the moon landing during the Cold War, then The Soviet will never let go of this great opportunity to attack the United States.
You must know that the Soviet Union already had several artificial satellites at that time. It was not difficult to monitor the United States' space landing on the moon, and the remains of the United States' landing point on the moon can still be found on the lunar surface. This is also a Strong proof.
Observing the surface of the moon and discovering the remains of the American moon landing
In fact, instead of doubting whether the American moon landing was faked, it is better to consider it from another aspect, that is "money".
Don’t think that landing on the moon is just like launching a rocket. The actual amount of money it will cost is huge. The United States invested 25.5 billion in the Apollo project alone, and recruited more than 1.3 million scientific research workers. For , the entire project will consume 0.57% of the United States' annual GDP in one year.
You must know that this is 's financial report in the 1960s. Today, NSAS's annual budget for 2022 does not exceed 0 billion.
The equipment and engineering required for human beings to land on the moon are expensive.
And the most critical problem is that apart from the political advantages that the moon landing has brought to the United States, there are actually not many gains in the fields of science and technical. , or what is harvested cannot be converted into actual benefits of .
For example, through the moon landing, the United States did discover that there are many nuclear reaction materials that are rare on the moon on the moon, but the problem is that even if you use today's mature technology drones , you can go to the moon to collect the little Nuclear fuel may not be enough for your gas money.
Rockets entering space require a large amount of fuel to provide power.
Therefore, since the decline of the Soviet Union, the United States no longer needs to man-made moon landings for political propaganda and scientific research. With the maturity of drone technology, the mission of exploring the moon has also It can be handled by the robot . It can be said that unless humans plan to colonize or develop the moon in the future, it may be difficult to send humans to the moon for exploration.
From this point of view, instead of spending high financial resources to pursue surface work such as man-made moon landing, it is better to develop construction and economic in a down-to-earth manner. I believe that no matter in the past or in the future, there must be a person who can lead mankind to look up at the stars. A country with strong capabilities in and .
China’s Chang’e-5 probe is collecting lunar samples
