Darth Smeg said:
Perhaps, but the actual shape of the galaxy is pretty flat. Sort of like a CD, but with a bulge in the middle.
So even though space is certainly 3 (or more) dimensional, you'll find most stars and their systems distributed on a more-or-less 2D plane. As for the discrepancies I don't mind so much. Mapping these things is a complicated and mystical pursuit, and nobody really understands it anyway
The thickness of the milky way averages 2000 light years- pretty far from 2D