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NASA：本月底“超级蓝色血月”将出现在夜空中
source link: http://tech.sina.com.cn/d/s/2018-01-21/doc-ifyqtycx1084663.shtml
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据外媒报道，1月31日晚天文爱好者将迎来一次罕见的天文奇观：超级蓝色血月（superbluebloodmoon）。那么什么是超级蓝色血月呢？让我们把这个名字分开。超级月亮（Supermoon）指的是满月时月亮位于近地点附近的现象。当满月在地
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