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网技联2017技术年会隆重举行,思拓合众获邀参加

2025-July-10 14:51 By: Xinhua
百度 不止是生产工具,CX70还是生活用品所以CX70很大程度上借鉴了SUV车型运动、充满活力和乐观、积极向上生活态度的设计风格,车顶行李架很好的体现了周末度假使用的意图,而车尾D柱部分采用黑色窗框,在车顶的后半部分营造出悬浮式的视觉效果,同样也是时下SUV类车型最时髦、最受欢迎的设计手段。

This photo taken on July 9, 2025 shows a press conference held by the Chinese Academy of Sciences (CAS) in Beijing, capital of China. A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side. Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature. As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain. (Xinhua/Jin Liwang)

BEIJING, July 9 (Xinhua) -- A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side.

Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature.

As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain.

The moon's near and far sides exhibit significant differences in morphology, composition, crustal thickness and magmatic activities. However, the mechanisms behind these disparities remain unresolved, representing a key issue in lunar science. Previously, scientific understanding of the far side relied primarily on remote sensing studies, scientists say.

In 2024, Chang'e-6 made history by bringing 1,935.3 grams of lunar far-side samples back to Earth. These samples were collected from the South Pole-Aitken (SPA) Basin, the largest, deepest and oldest basin on the moon, which provided a rare opportunity to clarify the compositional differences between the near and far sides and to unravel the long-standing mystery of their asymmetry.

"The SPA Basin is one of the moon's three major tectonic units, measuring approximately 2,500 kilometers in diameter. The energy from the impact that formed this crater is estimated to be 1 trillion times greater than that of an atomic bomb explosion. Yet, the exact influence of such a massive collision on the moon's evolution has remained an unsolved mystery," Wu Fuyuan, an academician of CAS and a leading researcher with the IGG, said at a CAS press conference on Wednesday.

The four papers published in Nature systematically reveal, for the first time, the effects of this colossal impact, which is the core highlight of these findings, said Wu.

Over the past year, Chinese scientists have achieved multiple pioneering breakthroughs through the study of the Chang'e-6 samples.

They found the evidence of volcanic activity on the moon's far side approximately 4.2 billion and 2.8 billion years ago, indicating such activity had persisted for at least 1.4 billion years.

For the first time, scientists obtained the ancient magnetic field information from the far side of the moon, revealing a possible rebound in the moon's magnetic field intensity around 2.8 billion years ago. This discovery indicates the presence of fluctuations in the driven power of the lunar dynamo.

Scientists have found that the water content in the lunar far-side mantle is significantly lower than that of the near side, indicating a significant difference in water distribution between the two hemispheres.

"We found that the mantle source of basalt from the SPA basin is extremely depleted in incompatible elements, which are commonly used to reveal the geological processes that rocks have undergone," said Yang Wei, a researcher with IGG.

This depletion could mean either the original lunar mantle was very low in the incompatible elements, or the massive impact event melted the rocks and carried these elements away. This discovery underscores the profound influence of large impacts on the evolution of the moon's deep interior, Yang said.

"The new discovery marks humanity's first direct access to key evidence of the deep interior material properties on the far side of the moon. It provides us with unique information to understand how the moon's early interior became layered, cooled and evolved, representing a crucial step toward unraveling the mystery behind the dramatic differences between the lunar near and far sides," said Li Chunlai, a researcher at the National Astronomical Observatories of CAS and deputy chief designer of the Chang'e-6 mission.

Additionally, Chinese scientists have made other discoveries. They unveiled the physical, mineralogical and geochemical characteristics of the Chang'e-6 lunar samples.

Meanwhile, Chinese scientists precisely determined for the first time that the SPA Basin formed 4.25 billion years ago, providing humanity with a more accurate anchor point for studying the history of large-scale impacts in the early solar system.

Mahesh Anand, a professor at the Open University in the UK, said, "We have had samples from the moon for over 50 years, samples collected by the Apollo and Luna missions. And we have many lunar meteorites."

"But there are lots of new findings that are coming out based on the work that has been done on Chang'e-6 samples that are actually turning many of the well established hypotheses and theories in the field of lunar science upside down, necessitating reexamination of many of those theories," Anand said.

He Hongping, vice president of CAS, said that upon receiving the Chang'e-6 lunar samples, CAS has placed high priority on related research efforts, and has yielded a series of high-level research achievements.

Guan Feng, director of the Lunar Exploration and Space Engineering Center of the China National Space Administration, expressed the hope that the comprehensive development of space science, space technology and space applications will be further promoted, urging more scientists to make use of the extraterrestrial samples and scientific data obtained from China's lunar and deep space exploration missions to achieve more results and make more discoveries.

Previously, Chinese scientists analyzed the samples collected by the Chang'e-5 mission from the moon's near side, and found evidence of young volcanic activity dating back just 2 billion years, extending the moon's volcanic timeline by 1 billion years. This discovery was hailed by international peers as changing humanity's understanding of lunar evolution.

The success of China's lunar exploration program is a prime example of the deep integration between science and engineering, said Li of the National Astronomical Observatories. ■

Ouyang Ziyuan (C), an academician with the Chinese Academy of Sciences (CAS), speaks during a CAS press conference in Beijing, capital of China, on July 9, 2025. A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side.Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature. As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain. (Xinhua/Jin Liwang)

Hui Hejiu, professor of Nanjing University, speaks during a press conference held by the Chinese Academy of Sciences (CAS) in Beijing, capital of China, on July 9, 2025. A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side. Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature. As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain. (Xinhua/Jin Liwang)

This photo taken on July 9, 2025 shows a press conference held by the Chinese Academy of Sciences (CAS) in Beijing, capital of China. A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side. Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature. As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain. (Xinhua/Jin Liwang)

Ouyang Ziyuan (2nd R), an academician with the Chinese Academy of Sciences (CAS), speaks during a CAS press conference in Beijing, capital of China, on July 9, 2025. A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side. Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature. As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain. (Xinhua/Jin Liwang)

Wu Fuyuan, an academician of the Chinese Academy of Sciences (CAS) and a leading researcher with the Institute of Geology and Geophysics (IGG), speaks during a CAS press conference in Beijing, capital of China, on July 9, 2025. A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side. Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature. As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain. (Xinhua/Jin Liwang)

Li Chunlai, a researcher with the National Astronomical Observatories of the Chinese Academy of Sciences (CAS) and deputy chief designer of the Chang'e-6 mission, speaks during a CAS press conference in Beijing, capital of China, on July 9, 2025. A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side. Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature. As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain. (Xinhua/Jin Liwang)

This image created by Chinese researchers shows the moon's far side. A series of research findings by Chinese scientists on the samples collected by the Chang'e-6 mission from the moon's far side have unveiled the volcanic activity, ancient magnetic field, water content and geochemical characteristics of the moon mantle, shedding the first light on the evolutionary history of its dark side. Four studies by the research teams from the Institute of Geology and Geophysics (IGG), the National Astronomical Observatories, both under the Chinese Academy of Sciences (CAS), Nanjing University, and other institutions were published in the latest issue of Nature. As the moon's revolution cycle is the same as its rotation cycle, the same side always faces Earth. The other face, most of which cannot be seen from Earth, is called the far, or dark, side of the moon. This term doesn't refer to visible darkness, but rather the mystery shrouding the moon's largely unexplored terrain. (CAS/Handout via Xinhua)

Editor: Zhang Zhou
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