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New advances in lunar soil research offer scientific evidence to unravel mystery of moon’s 'two faces'_我的网站

一 |     AI摘要      8月19日，外交部发言人林剑赞赏马来西亚总理安瓦尔涉台表态。林剑强调，坚持一个中国原则格局不可撼动，台湾是中国领土不可分割的一部分，中国必然统一。         北京8月19日电（记者 吴梦桐、董雪）就马来西亚总理安瓦尔近日接受采访时关于台湾问题的表态，外交部发言人林剑19日表示，坚持一个中国原则是人心所向、大义所在。中方对安瓦尔总理表态表示赞赏。    

    Lunar soil Photo: IC
Chinese scientists have made new progress in the study of lunar soil samples returned by the Chang'e-6 mission, providing fresh evidence to the striking differences between the moon's near and far sides, which have long puzzled scientists.
Because the moon is tidally locked to Earth, its rotation period matches its orbital period, meaning the same side always faces Earth. The moon's near side features vast dark basaltic plains known as lunar maria, while its far side is dominated by bright highlands with far fewer maria, creating a striking contrast between the two sides. Why does the moon have such "two faces"?
Scientists studying the moon's early formation and evolution have long used the lunar magma ocean model as a basic framework. Under the model, the chemical and isotopic characteristics of different types of lunar magma can be explained by the mixing of different components in varying proportions after the magma ocean cooled, Guangming Daily reported on Saturday. 
However, previous lunar samples were collected only from the moon's near side, while significant differences exist between the near and far sides in their topography, composition and internal structure.
Against this backdrop, the research team from Institute of Geology from Chinese Academy of Geologist Sciences studied feldspathic impact-melt rocks in lunar soil samples returned by the Chang'e-6 mission. Using China's first independently developed ion probe system, researchers conducted a comprehensive analysis to test the lunar magma ocean model and examine how large impacts reshaped reservoirs in the lunar crust and mantle.
Through high-precision analyses, the team identified key clues to the moon's evolutionary history, suggesting that the stark differences between its near and far sides may be linked to the ancient giant impact that formed the South Pole-Aitken Basin.
The study found that the massive impact continued to profoundly reshape the lunar crust and upper mantle after the lunar magma ocean had solidified, fundamentally altering the material composition of parts of the moon's far side.
The findings add to the traditional lunar magma ocean model, suggesting that the formation and preservation of the moon's crustal and mantle reservoirs may have varied significantly from region to region and cannot be fully explained by a single, uniform model of primordial magma-ocean differentiation.
The research provides new scientific evidence for understanding the differences between the moon's near and far sides, while offering fresh insights into the moon's complex evolutionary history, according to Guangming Daily. 
Global Times
。    当日例行记者会上，有记者问：据报道，马来西亚总理安瓦尔近日接受采访时表示，台湾是中国的一部分。被问及如何看待中国在解决台湾问题上不承诺放弃使用武力的立场时，安瓦尔表示，如果马来西亚一个州执意分裂出去，他也会动用武力维护国家统一，否则国家就会四分五裂。

二 | 中方对此有何评论？     林剑表示，坚持一个中国原则是人心所向、大义所在，国际社会坚持一个中国原则的基本格局不可撼动。中方对安瓦尔总理表态表示赞赏。    “我想再次强调，世界上只有一个中国，台湾是中国领土不可分割的一部分。中国必须统一，也必然统一，这是改变不了的历史大势。”林剑说。

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Published on:13:39:56