Things You Didn't Know Until Very Recently

[M95]

In Chinese and Japanese, the names of the planets (the ones known to the ancients at least) are all named after the five classical elements.  "Wuxing" is the classical Chinese concept of the five elements.  The names of the planets is as follows:

Mercury = 水星 ("water star")
Venus = 金星 ("metal/gold star")
Mars = 火星 ("fire star")
Jupiter = 木星 ("wood star")
Saturn = 土星 ("earth/soil star")

I didn't include how to pronounce them, because while they're written the same in Chinese and Japanese, they aren't spoken the same.