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人类月球日 月球建家园还有多远?
Yang Shi Wang· 2025-07-20 16:19
Core Viewpoint - The successful development of China's first lunar regolith brick-making machine marks a significant step towards establishing a lunar research station, utilizing lunar soil for construction purposes [1][3][9]. Group 1: Lunar Regolith Brick-Making Machine - The lunar regolith brick-making machine uses concentrated solar energy to melt lunar soil, forming bricks for construction on the Moon [3][5]. - The machine operates by tracking the Sun and focusing its light onto a point using a parabolic reflector, achieving high temperatures necessary for melting the lunar soil [5]. - The produced lunar bricks have dimensions of 10 cm by 10 cm and a thickness of 5 cm, with density and strength comparable to traditional red bricks on Earth [5][7]. Group 2: Applications and Future Prospects - The lunar bricks exhibit high strength and resource utilization efficiency, making them suitable for building roads and structures on the Moon [7][9]. - The lunar regolith brick-making technology will be integrated into future lunar missions, providing essential materials for the construction of a lunar research station [9]. Group 3: Communication and Navigation Systems - The Tian Du satellites, developed by the Deep Space Exploration Laboratory, were launched to validate key technologies for future lunar communication and navigation systems [10][12]. - These satellites aim to support the construction of a lunar internet and facilitate human activities on the Moon, potentially allowing for everyday internet access in the future [12]. Group 4: International Collaboration - The Deep Space Exploration Laboratory has established cooperation agreements with over 60 international research institutions and signed intergovernmental agreements with 17 countries for lunar research collaboration [20]. - The establishment of the International Deep Space Exploration Society in Hefei aims to foster global scientific collaboration and innovation in the field of deep space exploration [20].
2025年高考试卷中的科技元素
Ke Ji Ri Bao· 2025-06-11 08:18
Group 1 - The 2025 National College Entrance Examination (Gaokao) incorporated various technological elements, emphasizing the integration of scientific knowledge and humanistic care in the test design [2][5] - The English reading section highlighted microplastic pollution, showcasing a Chinese research team's solution that involves boiling water to remove up to 84% of microplastics, reflecting China's commitment to addressing global environmental issues [3][4] - The physics section featured notable technological achievements such as the CR450 high-speed train and the "Tiandu-1" satellite, demonstrating the application of physical principles in real-world innovations and enhancing national pride in scientific advancements [5][6] Group 2 - The Chinese education system is adapting to the AI era by emphasizing critical thinking and questioning skills in the exam format, encouraging students to formulate high-quality questions to obtain better answers [7][8] - The inclusion of practical agricultural knowledge in the language section reflects a shift towards teaching students how to think systematically and logically, which is essential in the context of AI and information acquisition [7][8]
这面太空超强“反射镜”,实现新突破!
Huan Qiu Wang Zi Xun· 2025-05-01 10:08
Core Viewpoint - The successful laser ranging technology test conducted by the "Tiandu-1" satellite research team marks a significant breakthrough in China's precision measurement capabilities in deep space, being the first of its kind to be performed during daytime conditions [1][3]. Group 1: Technological Advancements - The "Tiandu-1" satellite laser ranging test was conducted under strong sunlight interference, which previously limited such experiments to nighttime due to weak echo signals being overwhelmed by background noise [1][3]. - The new generation lunar space laser corner reflector developed by the Shanghai Astronomical Observatory weighs only 1.3 kg and features a large aperture single corner design, enhancing its reflective capabilities [3][6]. - The research team overcame several technical challenges, including speed matching, far-field diffraction design, and passive thermal control of low-temperature mirrors, which were crucial for the success of the daytime laser ranging test [3][6]. Group 2: Performance and Applications - The new laser corner reflector acts like a super-reflective mirror, ensuring efficient return of laser signals to the ground station, showcasing strong reflection capability, high precision, and lightweight design [6]. - The successful test indicates that the comprehensive performance of China's independently developed lunar space laser corner reflector has reached an internationally leading level, expanding the observational window for this technology [6]. - This advancement will significantly support China's lunar space exploration and deep space missions, including the validation and implementation of major projects like the international lunar research station [6].