Graphic and Web Designer Stephen Di Donato is currently running a Kickstarter campaign called Beyond Earth: A Poster Series where he’s raising funds for his wonderful illustrations of the eight planets of our solar system. Check out his process for the Mars poster as an example.
I’ve always been a sucker for everything astronomy related (see my attempt of a space themed poster) and combined with some fine illustration - I for one, am sold. So if you are anything like me, please consider funding this campaign. I went for the reward featuring all eight illustrations in postcard-size (this reward has free worldwide shipping by the way).