Mar 092017
Now that the Cassini space probe is doing death-defying dives past the Saturnian ring system, it’s getting some close-up views of the dinky lil’ moon that inhabit the rings . One such moon (within the Enke gap) is Pan, which exhibits a very unusual feature… it’s own little ring system. In the case of Pan, the rings are accreted directly onto the surface, forming a pronounced equatorial ridge running all the way around the little (34.4×31.4×20.8 km) world. The rings are far thinner than most people understand… perhaps just a few meters. So unless the moon tumbles – and it appears that Pan does not – the moon will scoop up bits of dust on a single thin plane.
Pan is not alone… the moon Atlas shows the same structure.
