Helene

[mmcirvin]

After all these years, Cassini is still capable of delivering WTF moments at Saturn. Here's Helene, a small moon orbiting around one of the Trojan points of Dione, which, like many of the smaller Saturnian moons, seems largely covered with pools of powdery material. The interesting thing here is that there are all these strange gullies with the powdery stuff at the bottom.

I wonder if Helene is unique in this regard, or if some of the other small moons would show similar gullies if imaged at sufficient resolution. The ones on Helene weren't easy to see in previous images.