Again I looked out: we were passing a church; I saw its low broad tower against the sky, and its bell was tolling a quarter; I saw a narrow galaxy of lights too, on a hillside, marking a village or hamlet.
There are no more uses of "galaxy" in the book.
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The Star Wars story is said to have taken place in a galaxy far, far away.
I mean, here we are on the run and everything, we must have the police of half the Galaxy after us by now, and we stop to pick up hitchhikers.
Douglas Adams -- The Hitchhiker’s Guide to the Galaxy