This is terriffic! I of course immediately recognized the Galaxy Explorer, but the style reminds me of the shuttle from 2001. I could see this modified into a near-future passenger shuttle designed to ferry maybe 12 passengers to the moon (to discuss top secret alien artifacts discovered there, of course).
I love the playability you've got here. I'm not familiar with the inner workings of the Galaxy Explorer, but the opening compartments and rover are great. This has the feel of an actual playset, not just a model.