What exactly is a flying saucer? Who can tell me?

UFO was originally called UFO in China, that is to say, the meaning of UFO was basically the same as UFO at first.

With the collection and arrangement of UFO phenomenon, as well as the gradual in-depth understanding and research, people find it inappropriate to use the word UFO to represent something that can be clearly known as UFO, because the so-called UFO means that you have no idea what is flying. Since we know that it is a UFO, it is no longer the habit of "unknown". So now UFO and UFO have different meanings.

Scientists in China have clearly confirmed the existence of flying saucers, and the military has kept credible witness files and detailed records of every sighting and pursuit of flying saucers. Therefore, UFOs have been recognized as aircraft made by unnatural forces, and are no longer "UFOs". Scientists in China clearly defined the term "saucer-shaped aerospace vehicle made by unnatural forces", and since then flying saucers have not been included in the category of UFOs.

At present, UFO refers to those unidentified flying objects, which may be some natural phenomena, such as clouds, ball lightning, mirage, aurora and so on. It may also be that some known things have not been seen in time, such as airplanes, satellite wreckage, hot air balloons, flying saucers, sounding balloons, birds, flying insects and so on. It may also be a meteorite or something; Of course, it does not rule out the pictures taken by some people, or the light spots or shadows formed by the defects of photographic equipment, and some people's hallucinations.

Although the research on UFO is not deep, and it is not clear where it comes from and what it is going to do, it is still a known object and no longer belongs to the category of unknown flight. Like many other things, people don't know the formation mechanism of tornadoes, but tornadoes still know; People still don't know the mechanism of spherical lightning, but they already know that this kind of thing is spherical lightning, so spherical lightning is no longer a UFO.

Flying saucer, one of the topics that people are most interested in, is associated with "whispering" and "alien civilization" in many discussions. Surprisingly, UFOs are actually visitors from the bottom of the earth and an illusion of the director of the earth sunspot! ! ! Magnesium produced in the earth's sunspot A is most likely to lose two electrons in the outer layer and become positive magnesium ion Mg+, which is a silvery white metal and keeps metallic luster in the powder state. At room temperature, it slowly oxidizes with oxygen in the air, and it will gradually darken and lose its original metallic luster if it is left in the ground air for a long time. After aluminum is oxidized on the surface, an oxide film is produced, which can still maintain a certain metallic luster and will be silver in the sun. When sunspot A is close to the ground, the crustal potential changes from 0 to positive, and the positively charged metal dust is repelled from the ground fissure because of the repulsion of the same sex. Some are scattered in the atmosphere, slowly oxidized into dust, and some dust clouds are rejected to the surface. Under the action of rotating sunspot electric field, dust rotates in groups in the air. Under the action of wind, it sometimes becomes a ball, sometimes a straw hat, a plate, a cone, a cylinder, an ellipse, etc. And the viewer gave it an image name-"UFO"! ! ! ! ! ! ! !

"UFO" translated into English is: UFO, abbreviated as UFO.

Flying saucer, abbreviated as UFO in English, originally meant UFO. In recent years, news about flying saucers has emerged one after another, and more and more people claim to have witnessed flying saucers. Specialized institutions and professional journals have been set up in the world to collect and study flying saucers, and various views are hotly debated. There have been reports about wonderful flying objects in the air since ancient times, but the scientific community generally regards1June 947 14 as the beginning of modern UFO stories. On this day, an American named Arnold was flying a plane to search for the missing transport plane. Suddenly, he found nine flying saucers in the sky ahead. They are spinning, moving forward at a speed of at least 2000 kilometers per hour, and flying to Mount Rainier in Washington State in an instant. This matter was widely reported by reporters, and the name of "flying saucer" spread all over the world. Half a century has passed and the news about UFOs has never stopped. For example, on June 9th, 198 1, the citizens of Taipei City, Taiwan Province Province witnessed 15 flying saucer flying over the west of the city. On July 24 of the same year, millions of people in Gansu, Qinghai, Sichuan, Yunnan and other provinces witnessed a huge spiral luminous body, and the central part of the object rotated at a constant speed to drive the aircraft to fly slowly. It is particularly interesting that dozens of astronauts of different nationalities who have undergone rigorous scientific training have seen UFOs from spacecraft and space stations since 1962. Although the reports on flying saucers are bizarre, there are several similarities: first, they come and go without a trace, and no one knows where they come from and where they fly; Second, the speed is unpredictable, from standstill to several Qian Qian meters per hour, the speed is different, and it turns around instantly; Third, superman's performance, free rise and fall, landing into the sea ... omnipotent. It seems to be better than the best plane in the world today. Where did such a wonderful flying machine come from? Because human technology has not yet been made, some people think it is from "aliens" or even the means of transportation for aliens to visit the earth. When it comes to aliens, there are many problems. First of all, how did aliens come? Aliens can't come from other planets in the solar system, because there is no life on those planets. Then proxima centauri, which comes from other star systems and is closest to the solar system, is also 4.2 light years away from the Earth. Suppose "proxima centauri Centauri" flies to the earth at the speed of 100 times that of modern rockets, and they will keep flying for 700 years. How to store food, fuel and other necessities in these 700 years? How to solve the problem of birth, illness and death? It is still so difficult for our "neighbors" 4.2 light years away to come to the earth, so it is even more difficult for people from other planets hundreds of light years away from the earth to visit. Secondly, what spacecraft do aliens take? Some people say that if the speed of an aircraft reaches 99.99% of the speed of light, then spending one year and five months on this spacecraft is equivalent to spending 1000 years on the earth, so that proxima centauri people can reach the global village in just a few years. However, when the spacecraft accelerates from takeoff to near the speed of light, it must constantly consume fuel. Even if the spacecraft weighs only one ton and is propelled by nuclear fuel, it will consume more fuel during acceleration than the whole mass of the earth. In addition, it must slow down and consume the same amount of fuel before landing. Therefore, the speed of light spacecraft is really impossible. Third, unmanned spacecraft is unlikely. If UFO is some kind of unmanned probe launched by aliens, when it flies over the earth, most of it will pass through the outer space of the earth, and the chance of being pulled to the ground by the gravity of the earth is slim. According to the calculation, it is very lucky to appear once in 60 or 70 years. Now there are dozens or more UFO "news" a year, sometimes there are nine at the same time, 15, which is too mysterious. Finally, and most importantly, no one can provide conclusive evidence of aliens or their aircraft. Although some reports vividly describe aliens' visits to the earth, they have been talking about aliens and flying saucers for decades, and so far they have not produced a clear photo, let alone a convincing object. However, we can't deny the existence of UFO phenomenon and its research value. The US Air Force organized 37 experts to investigate and classify 126 18 UFO incidents within two years. Finally, it is found that most UFOs belong to bright planets, such as Venus and bright stars, such as comets, meteors and Sirius. Clouds with special shapes, mirage, ball lightning; Balloons, parachutes, airplanes and their shadows, other airplanes; Birds and insects; A considerable part of them are satellites, especially the debris and scattered parts of satellites and launch vehicles. There were also several UFO incidents, but it was not clear what they were. It is absolutely certain that aliens and their spacecraft have not left any traces on the earth so far.