China News Service, Beijing, December 20th (Reporter Sun Zifa) The lunar sample reception event of the Chang'e-5 mission was held at the National Astronomical Observatory of the Chinese Academy of Sciences on the 19th. About 1,731 grams of "local products" from the lunar storm ocean were sent to China's first moon The sample laboratory officially "settled down".

　　The high-profile Chang'e-5 mission has thus shifted from the project implementation stage to the scientific research stage, and China's first extraterrestrial astronomical sample storage, analysis and research work has also officially started.

In the future, the researchers of the ground application system of the Chang'e 5 mission will carry out the storage, preparation and processing of lunar samples as planned, and start scientific research.

The "new home" of the Chang'e 5 lunar sample-the entrance to the extraterrestrial sample preparation room of the Lunar Sample Laboratory of the National Astronomical Observatory of the Chinese Academy of Sciences, the sample processing prototype displayed.

Photo by Sun Zifa

　　The reporter learned from the National Astronomical Observatory of the Chinese Academy of Sciences on the 20th that although it is a weekend off, since the Chang'e 5 lunar sample moved into the "new home" on the earth, researchers have been busy in all aspects, and the preparations for scientific research on lunar samples have been intensively carried out. .

　　In order to create a safe and comfortable "new home" for the hard-won lunar samples, the ground application system of the Chang'e-5 mission undertaken by the National Astronomical Observatory of the Chinese Academy of Sciences has built China's first lunar sample laboratory, which has storage and processing of extraterrestrial celestial samples. And analytical research capabilities.

　　The lunar sample laboratory integrates storage, processing, preparation, and analysis functions. It can realize the long-term storage capacity of lunar samples in a high-purity nitrogen environment on the ground to ensure that the samples are not polluted and other physical and chemical weathering during processing, allowing scientists Long-term scientific research and analysis testing of original samples can be carried out.

　　According to the National Astronomical Observatory of the Chinese Academy of Sciences, the lunar samples from the Chang'e 5 mission have been successfully moved into the "new home". After the lunar samples are unsealed, processed, stored and distributed, the ground application system is mainly responsible for completing the basic physical properties, chemical composition and experiments of the samples. Fundamental and routine analysis and research in laboratory spectroscopy.

　　These studies can not only help humans understand the basic characteristics of the moon, but also provide basis for the design and operation of lunar surface machinery, astronaut clothing design, and landing site selection for China's follow-up lunar and deep space exploration missions.

　　At the same time, the data obtained by the ground application system on the preliminary analysis of the Chang'e-5 lunar samples can also allow scientists and scientific research institutions to combine their goals and interests to more accurately select suitable lunar samples for application.

I believe that in the near future, scientific research on these lunar samples will reveal more mysteries about the moon for mankind.

　　More than 40 years ago, China accepted a 1 gram sample of the moon as a gift from the United States for research; now, China independently retrieved 1,731 grams of samples from the moon, becoming the third country in the world to retrieve samples from the moon. Bring the moon sample back to earth.

This process is not only from quantitative change to qualitative change, but also a direct manifestation of China's technological innovation and development and the realization of a huge leap.

　　Ouyang Ziyuan, an academician of the Chinese Academy of Sciences and an astrochemistry and geochemist, witnessed and witnessed this huge leap. More than 40 years ago, his leading team conducted research on half of the 1 gram moon sample presented by the United States. More than 10 years ago, he took the lead in the Chinese lunar exploration project. A chief scientist, he has since served as a senior advisor to the leading group of major special projects of China's lunar exploration project.

　　On the day of the lunar sample reception event for the Chang'e-5 mission, academician Ouyang Ziyuan, with white hair, specially put on a tie and a suit to attend. He recalled that he was appointed to organize a team to study the 1 gram lunar sample presented by the United States and said that the sample was sealed in The plexiglass seems to have a big thumb. After taking it out, it is actually only the size of a small soybean. The research team used half of the sample 0.5 grams to carry out the research, and the other half was sent to the Beijing Planetarium for preservation and display.

"It took about three to four months, and all the results are available. We published one paper, and we published 14 scientific papers for this 0.5 gram sample." American colleagues also believe that the research work of Chinese scientists Very well done.

　　Regarding the research on the lunar samples of Chang'e 5, Ouyang Ziyuan pointed out that it is necessary to mobilize the power of the whole country, seek truth and be pragmatic, give full play to their respective strengths, and fully dissect the lunar samples of the Chang'e 5 mission in order to be valuable.

He said that China has retrieved more than 1,700 grams of samples from the moon this time, and has built a special lunar sample laboratory, and has a large number of relevant scientific research personnel and a series of advanced scientific research equipment. He believes that more and greater research results will be obtained.

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