Gamingdeputy reported on May 1 that yesterday afternoon, the return capsule of the Shenzhou 17 manned spacecraft successfully landed at the Dongfeng Landing Field.
The sixth batch of space science experiment samples from the China Space Station has successfully returned with the Shenqiu astronauts. The life science experiment samples have been transferred to the Space Application Engineering and Technology Center of the Chinese Academy of Sciences in Beijing early this morning and delivered to scientists on site. The materials science experiment samples The samples will then be transported to Beijing with the return capsule of the Shenzhou 17 spacecraft.
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According to CCTV, the scientific experimental samples returned this time involved 23 scientific experimental projects, including 32 kinds of life experimental samples such as human osteoblasts, bone marrow mesenchymal stem cells, protein crystals, life organic molecules, seeds, as well as container-free materials, There are 18 types of material samples, including high-temperature materials and extravehicular exposed materials, with a total weight of about 31.5 kilograms.
Officials pointed out that scientists will subsequently conduct biological analyzes such as transcriptome sequencing and proteomic testing on the returned life-like cell samples, and study the biological mechanisms of cells in a microgravity environment.Provide new clues for related disease prevention and intervention.
In addition, scientists will also conduct crystal diffraction analysis on biological protein samples to obtain more accurate three-dimensional protein structure information and study target proteins, therebyProvide technical support for relevant drug research and vaccine development.
For materials science experiment samples, scientists will test and analyze the tissue morphology, chemical composition and distribution differences of ground and space samples, and study the influence of gravity on material growth, component segregation and solidification defects.Provide support for the preparation of important new materialsand is expected to make breakthroughs in research on lunar soil reinforcement materials and in-situ resource utilization of lunar soil.
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As for why materials science research is conducted in space? Simply put, due to the strong influence of gravity on the ground, it is difficult for us to gain an in-depth understanding of the microscopic phenomena of materials (Gamingdeputy Note: Materials science mainly studies the relationship between material structure, properties and processing processes), while space microscopic phenomena Environments such as gravity and ultra-high vacuum can provide special experimental environments for materials science research. The effects of factors such as buoyancy convection, precipitation, and hydrostatic pressure become weak or disappear, which is conducive to the study of material mechanisms.
Therefore, carrying out scientific experimental research on high-temperature materials in a space microgravity environment is important for understanding the intrinsic laws of material physical and chemical processes, enriching and improving basic theories of materials science, guiding and promoting the preparation process and production of foundation materials, improving material properties, and Promoting the development of the ground-related materials industry is of great significance.
In fact, as early as August 1987, our country used the space multi-purpose material processing furnace carried by the ninth returnable satellite for the first time to successfully carry out semiconductor, metal alloy and metastable materials, composite materials, functional single crystal and other materials in space. Preparation experiments and performance research work.
Since then, our country has successively successfully developed space materials science experimental devices for various purposes. Among them, it has been used as the payload of the Shenzhou spacecraft three times, and the material experimental furnaces carried on Tiangong 1 and Tiangong 2 have successfully completed a series of space materials science experiments. Experimental tasks and achieved a number of important research results.
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“Welcome home! The return capsule of the Shenzhou 17 manned spacecraft successfully landed, and the mission was a complete success”