Say the answer first: no, because this is common sense. Just think about it with your toes: the country has invested heavily in the construction of the 500-meter spherical radio telescope (FAST), and the public report is 667 million yuan. In fact, it includes ancillary works, and it must be far more than that. This cost a lot of manpower, material resources and financial resources, and also relocated 6,633 people from 14 10 households. What a high price. Wouldn't it be a joke if this most scientific creative project was finally completed and drowned casually?
But what about this? Eye of the sky? Why are you not afraid of heavy rain? This requires detailed explanation. Let me learn and discuss with you.
First of all, the structure of the eye itself can't store water. The 500-meter spherical radio telescope (FAST) is another name for the 500-meter spherical radio telescope, and it is called the 500-meter spherical radio telescope for short. Located in the karst depression of Dawodang Town, Pingtang County, Qiannan Buyi and Miao Autonomous Prefecture, Guizhou Province, it belongs to the national major scientific and technological infrastructure.
Speaking of the Eye of Heaven, I have to mention a person's name. This man is Nan Ren Dong, a native of China. In 1994, he put forward the idea of a 500-meter spherical radio telescope (FAST), and his life has been closely related to the Eye of the Sky ever since. The establishment, site selection and construction of Tian Yan took 22 years, and it was completed and put into use on September 25, 20 16. After more than three years of trial operation, it officially passed the national acceptance in June 2020 at 5438+0.
The main structure of the 500-meter spherical radio telescope (FAST) project consists of active reflector system, feed support system, measurement and control system, receiver and terminal system, among which the most famous and intuitive is the 500-meter spherical radio telescope. Cauldron? . This? Cauldron? The area reaches 250,000 ㎡, and there is 1.570m around the boundary.
This? Cauldron? It is the reflecting surface of this radio telescope, which is spliced by 4450 small reflecting surfaces, but this splicing is not tight and seamless, but there are gaps between each piece. And each panel itself is not as smooth, flat and airtight as it looks from a distance. This kind of panel combines many high technologies carefully developed by scientists. There are many small holes on the surface of the panel, making the whole eye of the sky a big sieve, no matter how heavy it rains. Cauldron? You can't accumulate water if you accumulate water (above).
So will the water on the ground drown the cauldron? We saw that some cities were flooded by heavy rain, cars were soaked in the roads, and culverts were several meters deep. When people and cars were flooded, there were many casualties. So what? Cauldron? Will it be flooded by heavy rain? In case of a once-in-a-century rainstorm, will the groundwater be submerged without infiltration? Cauldron? When the sun shines, it becomes a steamer? This is a problem that many people worry about (above).
Don't worry, this point has long been considered when choosing the site. Even the once-in-a-thousand-year rainstorm can't drown that place. At that time, in order to choose a suitable address? Eye of the sky? It took 13 years for scientific and technical personnel to finally decide to stay in Guizhou. Why in this remote mountain area? One of the important reasons is drainage.
This is a typical karst landform in China. What is karst landform? It is in this area that the crust is mainly limestone composed of calcium carbonate. This rock will produce water-soluble calcium bicarbonate when it is eroded by water. Under the long-term action, many caves will appear in the rock crust, forming karst landform, which is called Gass landform. When it rains, rainwater will flow into underground caves along karst rocks.
We can look at the picture above. The whole 500-meter spherical radio telescope (FAST) is located in the Bird's Nest at the top of the mountain, with an altitude of 1082 438+0 meters. You have to go through a winding mountain to get there. Therefore, no matter how big the water is, it can't be submerged. Even if all the Antarctic glaciers melt and the sea level rises by 66 meters, it will not affect them. Of course, all I'm talking about here is rain. If all the Antarctic glaciers really melt, people will become extinct. Who will this eye be left to?
What is the use of the 500-meter spherical radio telescope (FAST)? Many people think that the purpose of building the 500-meter spherical radio telescope (FAST) is to find? Aliens? . ? Aliens? Just a common name that everyone likes to use. In fact, what is the exact statement? Alien civilization? . Mankind has exhausted all scientific means and has been searching for extraterrestrial civilization for more than one hundred years. So far, nothing has been found. Can the 500-meter spherical radio telescope (FAST) be found? Nobody knows. The so-called search is always listening to information sent by alien civilizations, but it is actually passive? Eavesdropping.
The chief technician of the 500-meter spherical radio telescope (FAST) corrected people's understanding. He pointed out that the scientific goal of the 500-meter spherical radio telescope (FAST) does include the search for extraterrestrial civilization, but this is not the primary goal. The first goal is to find pulsars. The so-called pulsar is a fast rotating neutron star. When its strict periodic pulse signal sweeps across the earth, it is captured by human beings, which is a pulsar. Pulsar observation is not only of great significance in physical astronomy research, but also of great application value, and has important application prospects in time scale, cosmic astrometry, deep space autonomous navigation and so on.
The advantage of the 500-meter spherical radio telescope (FAST) is that it is by far the largest single-aperture radio telescope in the world, and it is also the most sensitive radio telescope, and its sensitivity and comprehensive performance have reached the so-called standard? The biggest machine on the ground? The 100-meter telescope in Bonn is 10 times that of the 300-meter telescope in Arecibo, USA, and 2.25 times that of the world-famous arecibo radio telescope (pictured above). The Arecibo telescope, managed by the American Science Foundation and Cornell University, sent its first greeting letter to extraterrestrial civilization in the 1970s.
The completion and use of the 500-meter spherical radio telescope (FAST) will also attract domestic and world-class scientists to conduct cutting-edge scientific research, become the world astronomical academic exchange center, and play an important role in promoting the development of astronomy in China.
What the 500-meter spherical radio telescope (FAST) has achieved. After more than three years of operation, the 500-meter spherical radio telescope (FAST) has not found any traces of extraterrestrial civilization, but it has made many remarkable achievements. The greatest achievement is that by March 2020, 1 14 pulsars were discovered and certified, exceeding the sum of the number of pulsar search teams in Europe and America in the same period. At present, the measurement accuracy of pulsars captured by the 500-meter spherical radio telescope (FAST) has been improved from 120 nanoseconds to 30 nanoseconds. What does this mean? That is, the pulse signal of neutron star can be captured by the 500-meter spherical radio telescope (FAST) as long as it sweeps across the earth for 3 seconds. The 500-meter spherical radio telescope (FAST) has thus become the most accurate pulsar timing array in the world.
In addition, more valuable discoveries are: in May 2020, a new rapid radio burst was discovered for the first time; In July 2020, the original gas composition of extragalactic galaxies was detected for the first time, and the neutral hydrogen emission lines of three galaxies were successfully detected. These are of great significance to the study of astrophysics and cosmology.
In addition, more than 300 papers have been published around the 500-meter spherical radio telescope (FAST), including 80 SCI papers and 76 EI papers. Obtained 69 patents authorized by the first patentee, including 39 invention patents and 30 utility model patents.
In short, the 500-meter spherical radio telescope (FAST) has just been officially accepted this year, and it can be said that it has just started and achieved remarkable results. The discovery and research of the 500-meter spherical radio telescope (FAST) continues. I believe there will be more and more discoveries in the future. Aliens? Will it finally appear in the eye of the sky? Wait and see.
That's it. Welcome to participate in the discussion. Thanks for reading.
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