Haha, thanks for the feedback! My art skills are pretty limited, so I'm really happy with how the little astronaut turned out.
Right now there definitely isn't much to do besides scoot around in space (hmm, I should add a starfield next). Now that I've got the basics of a microgravity physics simulation built out, I can start adding actual game features (like pickups in the edited version 0.0.5 I just posted)