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BEIJING, April 11, 2025 A researcher displays the lunar sample to be tested at the Nano Secondary Ion Mass Spectrometer Laboratory (NanoSIMS Lab) of the Institute of Geology and Geophysics of the Chinese Academy of Sciences in Beijing, capital of China, April 8, 2025.. The latest discovery from rock samples returned by China's Chang'e-6 lunar mission reveals that the moon's mantle contains less water on the far side compared to the near side, suggesting that the ''hidden hemisphere,'' which always faces away from Earth, tends to be much drier. (Credit Image: © Jin Liwang/Xinhua/Zuma Press/Fotoarena)
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