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Chinese scientists recently obtained the first information about the ancient magnetic field on the far side of the Moon, through the analysis of lunar soil samples brought back by the Chang'e 6 mission. The research team found that the intensity of the lunar magnetic field may have rebounded around 2.8 billion years ago, challenging the previously accepted conclusion that the lunar magnetic field sharply decreased around 3.1 billion years ago and remained in a low-energy state thereafter. The finding was published online in the journal Nature on Friday. ▲ 嫦娥六号玄武岩样品磁场记录揭示28亿年前存在相对活跃的月球磁场发电机。（图片由章敏、祁锴贤、石平原等绘制）图源：光明日报微信公众号 "The magnetic field is a key element in maintaining a planet's habitable environment. It not only shields cosmic rays but also protects the atmosphere and water, making it an important factor in creating a suitable environment for life to thriv
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