(241220) -- BEIJING, Dec. 20, 2024 (Xinhua) -- Researcher Cai Shuhui prepares rock sample collected by China's Chang'e-6 lunar probe at a lab of the Institute of Geology and Geophysics under the Chinese Academy of Sciences in Beijing, capital of China, Dec. 20, 2024. Rock samples collected from the moon's far side by China's Chang'e-6 lunar probe have provided groundbreaking insights into the evolution of the lunar body's magnetic field. Analysis of the samples, published on Thursday in the journal Nature, indicates the unexpected resurgence in strength of the moon's magnetic field 2.8 billi
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(241220) -- BEIJING, Dec. 20, 2024 (Xinhua) -- Researcher Cai Shuhui prepares rock sample collected by China's Chang'e-6 lunar probe at a lab of the Institute of Geology and Geophysics under the Chinese Academy of Sciences in Beijing, capital of China, Dec. 20, 2024. Rock samples collected from the moon's far side by China's Chang'e-6 lunar probe have provided groundbreaking insights into the evolution of the lunar body's magnetic field. Analysis of the samples, published on Thursday in the journal Nature, indicates the unexpected resurgence in strength of the moon's magnetic field 2.8 billion years ago, following a sharp decline around 3.1 billion years ago. The find challenges the prevailing theory that the moon's lunar dynamo remained in a low-energy state after that decline. It marks the first-ever paleomagnetic data obtained from the moon's far side, and provides critical insights into the intermediate stages of the evolution of the lunar dynamo, the geophysical mechanism that generated the moon's magnetic field in the past. (Xinhua/Jin Liwang)