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Chinese scientists published four Nature studies using 1,935.3g lunar samples. Key findings: Volcanic activity ~4.2/2.8 billion years ago with magnetic fluctuations, significantly drier mantle than near side, and impact-sourced basalts. The research resolves the 2,500-km basin's evolution and lunar asymmetry, cementing China’s planetary science leadership.（Photo/Chinese Academy of Sciences）
By FuRui, Sun Jiamin(intern), Li Si and Qiu Chenhui/China Youth Daily
来源：中国青年报客户端
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