NASA/JPL/Space Science Institute
Meet Mimas, the smallest of Saturn’s eight major moons.
Its dominant crater makes it look a bit like the infamous Death Star from Star Wars.
But a new report in the journal Icarus reveals that this moon’s external layer might just be a cover for an inner ocean.
NASA/JPL-Caltech/Space Science Institute
What makes Mimas different from the rest of the ocean worlds is that it doesn’t have obvious features on its surface that point to the existence of liquid water.