Planet Ring Shadow - Realism

[cherbert]

I noticed this astronomy picture of the day from my twitter feed. I noticed how the shadows in the rings had a curve to them rather than the straight angles seen in the game.

http://apod.nasa.gov/apod/ap131021.html

 

[Ulysses_W]

Er, surely this depends entirely on the angle of the sun?

 

[Rhaedas]

The first question is, are any of the ringed planets' axes tilted relative to the system's plane? If not, then you won't find this. Saturn has straight shadows along its rings two times in its orbit.