I'm making an animation of Solar system and shadows of all planets are shown, except Saturns rings which have no shadows¸, although there's no light from the Sun coming to the certain parts of the rings. For Saturns rings I used torus.
But when I position the torus at a certain angle, it's completely dark.
This is torus' node tree.
And this is the node tree for every other planet.
My render engine is Cycles.
What could be the cause?
Thank you!