I never bothred to look out the window... Seems I should start xD
I like looking at Earth from ESD and trying to see my house. They should put some of those binocular things, like the ones on the Empire State Building, by some of the windows. Except these should be super strong. You just pop in an energy credit and you can see what's going on on Earth.
It has to due with the fact that we cannot put the sun "far enough away" and still have it within graphic card draw distance to give proper perspective... so as you move around the station, your view angle of the sun will change dramatically because it is technically much closer than it should be.