Brilliant. Love the 'tan' set and very pleased with myself to have found it!

Nice and simple, but those moons of Jupiter are all named after people raped by Zeus, so it would be good if that answer was acceptable too.

I disagree with malcontent this time - what makes them unique is they are the only 4 Galilean moons of Jupiter
A lot of the moons of Jupiter are named after people raped by Zeus. Rape is featured so heavily in Greek mythology it seems like it’s a mistranslation. However the Jovian moon naming system makes that connection far too general.

Great group overlaps - good connections - 5 stars (very rare from me!)