Astraeus - Crystal World

World concept for my bachelor thesis project.

Far away from it's sun (inbetween Jupiter and Saturn as comparison) this fictional planet is a cold and dark place. The world is metal/crystal based with no plant life. It's named after one of the greek titans and mostly inspired by Saturn's Moon Titan (but obviously the colour scheme is different). What you can see in the sky is either a gigantic moon or a double planet system.