Set your alarms, space fans -- if you can drag yourself out of bed next Wednesday, you’re in for a treat.
The pre-dawn hours of January 31 will play host to an incredibly rare celestial convergence -- a "super blue blood moon."
1月31日凌晨时分将会出现一场罕见的天体汇聚 - “超级蓝血月亮”。
To prepare you for the lunar triple whammy, here’s your all-you-need-to-know guide.
It may sound like the apocalypse is nigh, so let’s break it down by its three parts: "super," "blue" and "blood."
So, a "supermoon" is when a full moon occurs at the same time as its perigee, the closest point of the moon’s orbit with Earth. The result: the moon appears larger than normal and NASA is predicting this one will be 14% brighter than usual.
Chances are you have used the phrase "once in a blue moon" -- but have you ever wondered where it came from? The well-known idiom actually refers to the rare instance when there is a second full moon in a calendar month.
你有可能使用过“曾经在蓝月亮的晚上”（即罕见的意思）这个短语 - 但你有没有想过这是从哪里来的呢？这个众所周知的短语实际上是指在一个日历月中有第二次满月的罕见情况。
Then completing this "lunar trifecta" is the "blood" element. Although it does not have a scientific definition, a "blood moon" occurs during a lunar eclipse when faint red sunbeams peek out around the edges of the moon, giving it a reddish, copper color.
For those in the Middle East, Asia, eastern Russia, Australia and New Zealand, the "super blue blood moon" will be visible during moonrise on the morning of January 31.
As long as the weather doesn’t try to ruin things, observers in Alaska, Australia, eastern Asia and Hawaii will be experience the whole phenomenon from start to finish.