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当“血月”遇上“超级蓝月”，这有多罕见？
source link: http://tech.sina.com.cn/d/2018-01-31/doc-ifyreuzn0401032.shtml
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今天晚上，天空中将出现一幕非常罕见的天文奇观——“血月+超级蓝月”。简单解释一下：血月=月全食；超级蓝月=超级月亮+蓝月亮。为什么月全食又叫“血月”？图自水印我们都知道月全食其实就是地球转到了月球和太阳中间，并且把月球完全遮在了自己的影子里
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