The lunar soil brought back by Chang 'e V made its first public appearance. In the early morning of February 17 last year, the Chang 'e-5 lander, which was on a business trip to the moon, landed successfully. Since then, researchers have been engaged in the preservation, analysis and scientific research of lunar soil. Now that Lang Yue has come to the World Expo, visitors can see Lang Yue in March. On the evening of 22nd, Guo Bo unveiled the true face of the lunar soil container. This moon-like container is made of artificial crystal, and the overall shape draws lessons from the bronze statue collected by the National Museum, which looks steady and generous.

Its internal shape consists of the earth, the map of China, the moon and the earth. The design of this container is 9.9 cm away from the earth and the moon, which means that there are nine clouds in the sky as the ancients said, which means that China's lunar exploration will break through the limit and cross Jiu Feng. The lunar soil is stored in a hollow sandwich sphere in the center, and the filled lunar soil can present the shape of the moon. It is understood that the total number of lunar samples brought back by Chang 'e V is 1, 736,5438+0g, which is mainly lunar soil, that is, soil covering the surface of the moon, containing fine mineral particles, cuttings and glassy particles. Moon soil is fine in texture, mainly composed of oxygen O, silicon SI, aluminum AL, iron FE, magnesium mg, calcium CA, sodium NA, potassium K, titanium TI and other elements. It contains no organic nutrients and is very dry. 18 10/8, the national space administration issued the "lunar sample management measures" for the first time, clarifying that lunar samples can be divided into four basic uses in principle: permanent preservation, backup and permanent preservation, research and public welfare. The management and use of lunar samples conform to the relevant international conventions concluded and acceded to by China.

Wu Yanhua, deputy director of the National Space Administration and deputy commander-in-chief of the lunar exploration project, once said that lunar samples include three uses, mainly for scientific research. Some samples will be deposited in the National Museum of Tibet for public display and popular science education; According to international cooperation conventions and multilateral and bilateral cooperation agreements, lunar samples and data management measures will be released when cooperating with relevant countries. According to international practice, some of them may be deleted as national gifts. The main purpose is to conduct scientific research. Some samples will be publicly displayed and educated in the National Museum. According to international cooperation conventions and multilateral and bilateral cooperation agreements, lunar samples and data management methods will be released for scientists from relevant countries and countries around the world to share and cooperate with. According to international practice, some of them can be used as national gifts.

According to experts in geological museum, Hunan Province, the reason for disaster tolerance storage in different places is that if all the samples are put in one place, once the polluted or preserved environment is destroyed, all the samples will be worthless, so we must find another place to reserve one as the second insurance. With more and more moon samples, there will be more and more places for preservation and exhibition.