Think of the last time you had your feet in the ocean. While you were there, did you ever imagine what an ocean on another world might be like? Would it be a different color, a different temperature? Would the waves be taller or the water populated with strange alien creatures? What sort of sky might that sit under? Whatever you were picturing, I’m willing to bet it was on a planet orbiting around a far-flung star. But it turns out that our very own solar system is populated with…
