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If you look up at the sky tonight, you'll experience a rare celestial phenomenon: a solstice full moon.
如果你今晚仰望天空，你会发现一个罕见的天体现象， 至日满月。
Depending on your timezone, this may be the first of its kind since 1948.
根据你所在的时区，这可能是自1948以来的首次。
Full moons are known to cause fitful nights of sleep, so beware!
众所周知，满月会引起夜间睡眠间断，所以要小心！
In 2013, the jorunal Current Biology published a study where researchers found that on the night of a full moon participants had lower levels of the sleep hormone melatonin.
2013年，现代生物学期刊发表一项研究，发现在满月的夜晚参与者有较低水平的睡眠荷尔蒙褪黑素。
Participants in the study slept 20 minutes less on average and deep sleep brain activity decreased by 30 percent.
研究对象比平均少睡20分钟，深度睡眠脑活动减少百分之30。
Whether you get as much sleep or not, researchers have also found that the days around summer solstice are the happiest days of the year.
无论你睡眠足够与否，研究人员还发现夏至前后是一年中最快乐的日子。
译文属可可原创，仅供学习交流使用，未经许可请勿转载。
