they did do a great job. I saw them earlier today when they came by my facebook feed
I like how they chose to do them in travel poster style and they have emulated styles from the 1920s/30s (Earth, your oasis in space); a style eumlating David Klein's work (Grand Tour, Mars); Disney attraction style (Europa); 1930s Soviet minimalist style (HD 40307g); and also how several look like they could be Mondos
it was a good job.