article｜Gaowei
"This 'big pot' is amazing!" Recently, " China Sky Eye " has made new discoveries - the largest atom gas structure in the universe so far, and the related achievements are published online in the international academic journal " Nature ".
appeared twice in "Nature" within one month, reflecting the hard power of "China's Sky Eye". "China Sky Eye" is the 500-meter diameter spherical radio telescope (FAST), which has the highest diameter and sensitivity in the world. The latest data shows that it has observed and discovered more than 660 pulsars, which is more than 5 times the total number of pulsars found in all radio telescopes in the same period and internationally. In the fields of interstellar navigation, the origin and evolution of the universe, and the exploration of extraterrestrial life, the "China Sky Eye" has made many outstanding achievements and its achievements are obvious to all.
Only by "the giant eye to observe the sky" can you understand the magnificent galaxy. The unknown is far greater than that of human beings, and astronomy is a science that relies heavily on observation equipment. Its purpose and important weapons of a great power "light years away" have undoubtedly greatly broadened the "vision" of mankind. Taking this major discovery as an example, the detection results show that in the peripheral space far away from the center of " Stephen Five-stack Galaxy ", there is a large-scale low-density atomic gas structure, which is 20 times larger than the Milky Way . Some experts believe that this challenges the study of the evolution of galaxies and their gases in the universe. "Existing theories are difficult to explain why, for such a long time, these thin atomic gases have not been ionized by ultraviolet background radiation in the universe."
Whoever can see the distant future can be more proactive in grasping the present. It is precisely because of the infinity of the universe that every discovery is precious, and every "small step" is of great significance. The "Chinese Sky Eye" has the confidence to "accumulate small steps into big steps" - in theory, it can receive electromagnetic signals 13.7 billion light years away, and this distance is close to the edge of the universe. At the end of March 2021, it was officially opened to the world. This will surely condense more human wisdom and see further on the earth. Coincidentally, China's first dark matter particle detection satellite, "Wukong", also recently received good news: With its observation data, researchers have discovered a new structure of the cosmic ray energy spectrum. This challenged the discovery of the classic cosmic ray propagation model, which is also based on international cooperation.
Things are not difficult, but they are easy but difficult. The English abbreviation of "China's Sky Eye" happens to be "fast" - In the field of radio astronomy, my country has developed from a catching up state to leading the world for 20 years, showing the "acceleration" of independent technology. But behind the "fast" is the long-term efforts of generations. Facts have proved that core technology cannot be bought, and development depends on yourself after all. From pre-research to completion, there is no ready-made experience to learn. It took 13 years to select the site alone, and nearly 100 scientific researchers have been one after another. The great achievements of "China's Sky Eye" are itself a great exploration that faces the unknown.
"Who preached at the beginning of ancient times? The upper and lower parts have not yet formed, so why should I examine it?" The future has come, and the thousand-year sigh of Qu Yuan in " Days Question " is in my ears. For the sake of "the law in the heart", human beings will always be amazed by the "starry sky above their heads" and will travel across the vast world.
【Author】High-dimensional
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