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一光年如何计算
更新时间: 2020-11-06 00:00:00  

光速是每秒299792458米乘以365日,每日86400秒,所以一光年等于9460730472580800米。

光年是长度单位,用来计量光在宇宙真空中沿直线传播了一年时间的距离,一般被用于衡量天体间的时空距离,其字面意思是指光在宇宙真空中沿直线传播了一年时间所经过的距离。

关键词: 光年 如何 计算

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