Uhhh....
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The explanation that was devised for this scene is, I believe, that the Star Wars "galaxy" is much more complex than the Milky Way and is actually a very large main galaxy orbited by a couple of smaller dwarf galaxies. The Rischi Maze mentioned in attack of the clones is one such (at least, according to some sources).
It's a bit if a stretch, but it makes the map of the SW galaxy a bit more interesting so I'm willing to go with it.