It was "our" Earth, they showed what was left of some bridge in NYC. If you can't see that you haven't watched enough movies or need glasses, or both.
Uh, aside from "watching enough movies" I've actually been
to New York quite a few times - big shocker there, I'm sure. And I see fine. If you can't offer better than "some bridge in NYC" I'd say that you don't know the city well enough to tell whether those darkened stumps across the water were New York or New Gargleblast.
Apropos of nothing, BTW, if you type "galactica" and "holy fuck" into Google tonight it returns 6210 hits.