Stephan Martiniere is one of our all-time favorite science fiction artists, having contributed gorgeous cover art to tons of books. And it turns out he also painted some totally stunning concept art to Marvel's Guardians of the Galaxy. It's basically a space-opera feast.

Update: Alas, Martiniere asked us to take the art down. Sorry about that.

This artwork comes via, which has also featured Martiniere's work before. Check out some of our favorites below, and tons more over at