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For so many years, there has been no manned landing on the moon, which is indeed caused by economic factors. But it's not that the United States can't afford to pay this money, but that the United States has found a more economical way than manned landing on the moon, so there is no need to break the bank to carry people again. This method is to detect satellites and probes.
The moon is a barren planet, and the American moon landing is simply not worth mentioning in the universe. If alien civilizations have to worry about this, then they have to die.
Alien civilizations influencing human landings? Human beings are too exalted of themselves, and they really think of themselves as human beings.
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Don't be naïve enough to think that human technology is so advanced that it is easy to travel between the stars. The most important reason why the Americans wanted to carry out manned landings on the moon back then was that they wanted to compete with the former Soviet Union for world hegemony rather than scientific exploration, and it can be said that scientific exploration of the moon was only incidental at that time. Now that the Cold War has ended and the Soviet Union has collapsed, the United States will undoubtedly have to devote more energy and financial resources to maintaining its hegemony in the world and coping with the current economic crisis.
Although many space probes now use new technology, you have to understand that there is a world of difference between manning and only launching a probe, and how to ensure the lives of astronauts and successfully complete the scheduled plan is much more difficult to do than to say, this is not to drive there, not to be fast, otherwise you can only send corpses.
Why not land on the far side of the moon, the reason is very simple, because the rotation period of the moon coincides with the revolution period, so that only one side of the moon is always facing the earth, if you land behind the moon, then the communication will be blocked, you must know that the radio signal will not turn around the moon from the far side of the moon to the earth without special circumstances.
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The United States did not have 30,000 nuclear weapons in 1967, and I don't know where this data came from, and the foreign policy of the United States depends on the interests of the Americans and their imagination of interests, not on the pressure of aliens or the light of the Galactic Alliance, given that you believe in such an illusory thing, you really should go to a psychiatric hospital to have a look, it is good for you, hello, I hope mine will help you!
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This statement is generally fried and is also for commercial purposes.
Of course, people must have the spirit of exploration, and science and technology will continue to progress.
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The main contents of the US outer space program, also known as the new "Star Wars" program, are: It is necessary to develop a large number of military spacecraft in space, form a space patrol fleet, and attempt to establish a powerful military empire in space beyond the earth's ozone layer. According to a recent report in the Youth Reference, according to the United Kingdom**, if the U.S. plan is really implemented, the U.S. will become the sole "juggernaut" in outer space by 2014 at the latest.
According to reports, this ambitious new "Star Wars program" of the United States was named "Veto", that is: no country will be allowed to use space for military or other purposes without the consent of the United States. The "veto plan" was made after the great success of the US space technology, the satellite global positioning system, in the wars in Afghanistan and most recently in Iraq.
In the military operations of the Iraq War, because the US satellite global positioning system gave the US ground forces a decisive advantage, the Pentagon believes that the next step in the global arms race is obviously how to control the restraint in space.
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Outer space intercontinental strategic missiles and spacecraft that attack the enemy's outer space by various means in order to prevent a nuclear strike by a hostile state against the United States and its allies. The background of the "Star Wars program" was introduced in the late Cold War, due to the Soviet Union.
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If you want Huang He to change his hairstyle, it's just that you're awesome.
First of all, you have to think about why your grades have dropped, what factors are causing you to figure it out, and if it's a study method, I can tell you about my study method. I didn't get good grades, the main reason was that I didn't grasp the class time, but then I paid a lot of attention to the class time, and the grades came up suddenly, ten minutes in class is better than an hour in class, follow the teacher's train of thought, take notes in time (help not to be distracted), and ask questions that I don't understand first after class; Then it's time to do the questions after class, don't be afraid of the questions you can't do, be sure to understand it and ask the teacher more. I will tell you my learning experience, I hope it will be useful to you, I wish you success in your studies, and I will send you a message: >>>More