微重力环境研究

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研究发现微生物能“抗”过太空旅行
Xin Hua She· 2025-10-09 04:25
飞行结束后,枯草芽孢杆菌孢子的生长能力、结构均未发生改变,这表明这种微生物能够"抗"过太空飞 行这样的极端条件。相关研究论文已发表在英国《微重力》杂志上。 枯草芽孢杆菌有助于支持免疫系统、肠道健康和血液循环。研究论文的合著者、来自皇家墨尔本理工大 学的埃琳娜·伊万诺娃说,研究表明,这种对人类健康很重要的细菌可以承受快速的重力变化、加速和 减速。这增加了人们对生物体如何应对太空独特环境的整体理解,将有助于为宇航员设计更好的生命支 持系统,让他们在长期任务中保持健康。此外,研究人员和制药公司也可以利用这些数据在微重力环境 下进行创新的生命科学实验。(完) 新华社墨尔本10月9日电(记者徐海静)澳大利亚皇家墨尔本理工大学日前发表新闻公报说,该校牵头 的一项试验首次证明,一种对人类健康至关重要的微生物能够在火箭发射和返回的极端条件下存活下 来。 公报介绍,枯草芽孢杆菌的孢子搭乘一枚探空火箭升空,待火箭返回地球后,研究人员对这些孢子进行 分析。结果显示,在火箭快速升空过程中,枯草芽孢杆菌孢子承受了高达地球重力13倍的重力;在距地 约260公里的高度火箭主发动机关闭后,它们经历了超过6分钟的失重(微重力)状态;火箭重回大 ...
中国空间站第八批25项约37.25公斤科学实验样品返回地球
Huan Qiu Wang Zi Xun· 2025-04-30 18:25
Core Insights - The successful return of the eighth batch of space science experiment samples from the Chinese space station on April 30, 2023, marks a significant achievement in space research, involving 25 experimental projects across various fields including space life sciences, materials science, and new technologies, with a total weight of approximately 37.25 kilograms [1][3] Group 1: Space Life Sciences - The returned life science samples include 20 categories such as bone cells, induced pluripotent stem cells, bronchial epithelial cells, early embryos of humans and animals, protein samples, and fruit flies, representing the largest variety of biological samples and experimental projects to date from the Chinese space station [3][5] - Research will focus on mechanisms of bone loss in microgravity, characteristics of 3D growth of stem cells in space, effects of space radiation on cancer, and the impact of space environments on early embryonic development [5][7] Group 2: Space Materials Science - The materials science samples, which will be transported back to Beijing, consist of 22 types across 4 categories, including tungsten-based ultra-high temperature alloys, high-strength steel, nonlinear optical crystals, indium selenide semiconductor crystals, lunar soil reinforcement materials, and gel composite lubricants [5][7] - The research aims to analyze the effects of microgravity on material growth, segregation, solidification defects, and performance, providing technical support for the design of new high-performance alloys and large-size high-performance crystals [7]