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科学家尝试解开月球正面背面不对称的谜题 - 站长搜索
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科学家尝试解开月球正面背面不对称的谜题

趣科技 2020-06-25 16:08:07 转载来源: cnBeta.COM

相比较正面的坑坑洼洼,月球背面的暗区非常少。在首次观测到这个结果的几十年后,研究人员近日提出了一项新的假说,其中关键是在月球形成时放射性元素分布不均匀所导致的

相比较正面的坑坑洼洼,月球背面的暗区非常少。在首次观测到这个结果的几十年后,研究人员近日提出了一项新的假说,其中关键是在月球形成时放射性元素分布不均匀所导致的。

月球背面的特征远不如我们每晚看到的这样丰富。月球背面的黑暗区域要少很多,被称之为“maria”或者“sea”。长期以来,科学家都认为是由于其他物体撞击不均,或者是火山活动造成的。不过现在科学家认为这可能是多因素共同作用的结果,一些特定的同位素可能发挥了很大的作用。

在这个假说中,钾(K),钍(Th)和铀(U)这些不是至关重要的。这意味着它们以各种中子数可变的原子构型出现。这些可变成分的原子被称为 "同位素",其中一些同位素是不稳定的,会散开产生其他元素,产生热量。
这些元素被认为是月球近侧的丰富元素,放射性衰变产生的热量可能增强了火山活动,并导致月球近侧的大片区域呈现出更深的外观。

该研究的共同作者 Matthieu Laneuville 在一份声明中表示:

由于相对缺乏侵蚀过程,月球表面记录了太阳系早期历史的地质事件。特别是,月球近侧的区域拥有与月球其他地方不同的铀和钍等放射性元素的浓度。了解这些局部铀和钍富集的来源,可以帮助解释月球形成的早期阶段,进而解释早期地球上的状况。

标签: 科学家 尝试 解开 月球 正面 背面 不对称 谜题


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