Addendum

I expect civilization there not to be very advanced, because the only reason to go to Jupiter is to get more stupider.

Speaking of Fantasy Happening on Other Planets

What do you think they're up to on Jupiter? Obviously nothing good, but what in particular? Is there a single wizard-king in his fell citadel or a metropolis which forces the rest of the planet to bend to its will? I bet it's the latter, and people on far continents think it's a holy place, for they are no better in truth.