Great American Eclipse 2017 伟大的美国日蚀2017

in live •  7 years ago  (edited)

 

者在美国大陆今天是为一个特别天文治疗: 前排位子到总日食。日食发生在太阳和地球之间, 阻挡了太阳的光到达我们。

虽然日食并不少见, 但当地球上的观众处于月球阴影的中心时, 日全食只发生在每18月一次。要看到一个人需要你在地球上的正确的地方, 和一个日全食在同一地点只发生每375年平均。


Source : Great American Eclipse 2017

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7 years ago by

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