What Plans? said:
Even if the starfields were similar, that could easily be explained as stars which are too distant to change position in the sky.
The one background which had always royally pissed me off, even as a kid, is the final scene of ESB when Luke and Leia are looking at the distant galaxy. That galaxy is huge in the sky, but even so, it would still be at LEAST a few MILLION light years away. Which means that it should have been visible in every single starfield in the entire Star Wars saga. There would not be a single place in the galaxy that you could go without seeing it in the sky. Just like, even if Earth got moved to the other end of the Milky Way, much of the night sky would actually remain the same because of the light coming from stars in galaxies outside of our own.
There has already been pages of debate about this. Without starting another debate, I'll say that adywan has decided that is an accretion disc forming around a new star. So, they are still inside the galaxy, positioned just above the orbital plane of a newly-forming solar system. I agree that this makes the most sense.