神舟二十一号航天员乘组搭乘神舟二十二号载人飞船昨晚在东风着陆场成功着陆，航天员张陆、武飞、张洪章身体状态良好，已于今天凌晨抵达北京。The tenth batch of space science experiment samples from the China Space Station also returned successfully with the Shenzhou 22 spacecraft. They arrived in Beijing early this morning and were delivered to scientists for follow-up research.
This batch of returned scientific experiment samples involves 23 experimental projects in the life science, materials, and combustion categories, including 9 life experiment samples, 12 material experiment samples, and 2 combustion experiment samples, with a total weight of approximately 41 kilograms.
Currently, life science experimental samples such as artificial embryos and brain organoids have been transferred to the Space Application Engineering and Technology Center of the Chinese Academy of Sciences.After the staff inspected and confirmed the status of the returned experimental samples, they were handed over to scientists for follow-up research.
The remaining materials and combustion scientific experiment samples will be transported to Beijing with the return capsule of the Shenzhou 22 spacecraft.
In the field of life sciences, scientists will subsequently elucidate the impact of space environment on the development of human artificial embryos and stem cell behavior through biological analysis such as transcriptome sequencing and proteomic detection; elucidate the specific molecular mechanisms of space environment affecting embryonic development at multiple levels; elucidate the regulatory mechanism of microgravity environment on kidney organoid development and fibrosis, and verify specific genes. Due to the inhibitory effect of knockout on renal fibrosis in microgravity environment; revealing the molecular mechanism of weightless bone metabolic balance and cardiovascular dysfunction from the perspective of protein homeostasis regulation; revealing the impact mechanism of space radiation on the occurrence of early events in cancer, and discovering biomarkers; revealing the influence of nucleoside types on the peptide formation process of different chiral amino acids in the molecular evolution system.
These studies are expected to reveal the adaptation laws of life in the space environment and provide crucial life and health theoretical basis for future long-term human stay in space and deep space exploration.
In the field of materials science, after the experimental samples of new titanium alloys, high-strength and tough steels, relaxor ferroelectric single crystals and other materials are returned, scientists will test and analyze the tissue morphology, chemical composition and distribution differences of the space samples to study the influence of gravity on material growth, component segregation, solidification defects and performance.
The research results will provide technical support for guiding the performance optimization of new alloys, as well as the ground preparation of key materials such as high-performance piezoelectric, ferroelectric functional crystals, and high-strength structural steel, helping their application in aerospace, high-end equipment manufacturing, precision sensing, and medical ultrasound imaging.
In addition, after the combustion experimental sample burner, soot collection plate and collection cover are returned, scientists will conduct analysis and research on the generation characteristics of semiconductor nanomaterial flame synthesis products, soot samples and nanocarbon particles.
The research results are expected to provide technical support for the flame synthesis of extraterrestrial nanomaterials, the development of new energy systems, space fire protection technology, and the preparation of advanced functional nanocarbon materials.