This may be a stupid question but it has been bothering me for a while. Why do galaxies look the way they do in a spiral? If a typical galaxy is 100k light years across is can take that much longer before the light from the far side to reach the telescope. Unless it is face on of course. If the galaxy is spinning, by the time the light from the far side gets to us surely it would be distorted and it wouldn't look like a nice spiral? Could this partially explain some elliptical galaxies? Thanks, Jake.