Scientists originally thought a similar process may have generated an early lunar magnetic field.

科学家原本认为，早起的月球磁场是由一个相似的过程引起的。

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Now, two new studies published in the journal Nature have come up with possible explanations for a magnetic lunar field.

现在，《自然》杂志上刊登了两篇新研究提供了关于月球地磁场的可能原因。

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Lunar rock samples brought back by the Apollo astronauts provided evidence of an ancient magnetic field on the Moon about 100 times weaker than the Earth's magnetic field.

阿波罗号宇航球带回的月岩石样本证明了在月球上存在着古老的磁场区域，并且磁场强度比地球磁场强度弱一百倍。

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