In article ,
"KalElFan" wrote:

Phantom Stranger has since posted some more direct
evidence of Krypton being in another galaxy (Jor-El
dialogue), and I'm still very vaguely remembering a
reference by Superman to Lois, perhaps in the rooftop
interview scene with them. At the beginning of Smallville
season 5, Clark also tells Chloe Sullivan that Krypton is
in another galaxy, though he has no personal knowledge
of that. With the series ongoing it could be retconned
that he didn't know the exact story (see a possibility later).

In Clark's meeting with Swann there is some looking at star maps,
pointing out where Krypton was and now isn't. That places Krypton in
our galaxy and outside our solar system. at least in the Smallverse.