What's inside Enceladus? How do we make water safe for drinking? How Sunny is it on Saturn's moons? What causes motion sickness? Could we collect sunlight in space and beam the power down to Earth? Can lunar gravity cause earthquakes? How did primordial gravity waves arise? Are buried bodies still infectious years later?
Not very sunny on Enceladus as it only receives about 1% of the sun earth does, clearly not a beach holiday destination. Although it is the most illuminated moon of Saturn due to it's icy exterior. Fire Science Blog, Thu, 30th Oct 2014