New analysis of Apollo Moon samples finally settles debate: « For decades, scientists have argued whether the Moon had a strong or weak magnetic field during its early history (3.5 - 4 billion years ago). Now a new analysis shows that both sides of the debate are effectively correct. »

· · 来源:tutorial资讯

Donald Trump tapped Emil Michael (at right) in December 2024 to become undersecretary of defense for research and engineering.WIN MCNAMEE—Getty Images

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