Why do Japanese say The moon is beautiful isn't it?

What does the moon is beautiful isn't it mean in slang?

the moon is beautiful, isn’t it ?

''the moon is beautiful.. Isn't it?'' • Damianya 18 AU • Spy x Family

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The moon is beautiful tonight, isn't it? - the short video essay about language & love

"The moon is beautiful tonight, isn't it?"

The reason of why the Moon is beautiful

The moon is beautiful isn’t it?

The moon is beautiful, isn’t it? ( a classical playlist )

☄. *. ⋆ | 🌊 :: " The moon is beautiful, isn't it? " | Gacha meme ( og !! ) | ˚ ༘♡ ⋆ ❀

Isn't the moon lovely meaning?