The meaning of 住んでる星が違う


The sentence is "諸星先生は元々住んでる星が違うし". This looks to me an idiomatic expression,
but I cannot find this in dictionary.

Another interpretation I was thinking about is that the teacher in the above
sentence "lives in another star/solar system", which is to say that it's just
a completely different person (in character). It fits, but not sure if it is
accurate; for one, living in another planet feels more accurate, and if so 星
should be short for 惑星？




> 「諸星先生{もろほしせんせい}は元々住{もともとす}んでる星{ほし}が違{ちが}うし・・」

While 「住んでる星が違う」 is certainly an exaggerated and/or metaphorical expression, I
would not necessarily call it an idiomatic expression because it means what it
literally means, which is " **to live on another planet** " as you said.

「星」 can mean "a planet" as well all by itself.

> "Mr./Ms. Morohoshi lives on another planet to begin with."

A super-literal TL would be:

"As for Mr./Ms. Morohoshi, the planet s/he originally lives on is different."

This is a good example of how literal translation rarely works well between
the two languages. What I am trying to say is that if you translated the very
natural-sounding English phrase "to live on another planet" directly into
Japanese, you would **_not_** arrive at 「住んでる星が違う」, which is a completely
natural-sounding Japanese phrase.




> 「諸星先生{もろほしせんせい}は元々住{もともとす}んでる星{ほし}が違{ちが}うし・・」

While 「住んでる星が違う」 is certainly an exaggerated and/or metaphorical expression, I
would not necessarily call it an idiomatic expression because it means what it
literally means, which is " **to live on another planet** " as you said.

「星」 can mean "a planet" as well all by itself.

> "Mr./Ms. Morohoshi lives on another planet to begin with."

A super-literal TL would be:

"As for Mr./Ms. Morohoshi, the planet s/he originally lives on is different."

This is a good example of how literal translation rarely works well between
the two languages. What I am trying to say is that if you translated the very
natural-sounding English phrase "to live on another planet" directly into
Japanese, you would **_not_** arrive at 「住んでる星が違う」, which is a completely
natural-sounding Japanese phrase.

