> I will admit I don't know much about the geometry of our galaxy, but I was
> under the impression that the disk is hundreds of billions of light years
> "thick",
It's much smaller than you think:
http://en.wikipedia.org/wiki/Milky_way
> So... about 36 seconds of arc. Man, that's pretty small.
It's still one of the very few objects in the sky that allows you to
actually see its shape with a good pair of binoculars or a small telescope
though.
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