this didn't go as planned.

Jumped to far ahead in the tutorials I guess.

I did learn (more then I wanted) about the union / difference stuff. It's really hard to get the shadow on the planet to be behind the ring and at the same time in front of it. (It's a two part shadow - but then it can not be transparent, but must be shaded, because it has to overlap itself.. and so on.)

Anyway, I did do something.