I'm an astronomer, not a geomorphologist. No, I didn't make that word up (though I thought I did before checking Wikipedia). A geomorphologist studies the structures of landforms and tries to figure out how they got that way. I guess I do that professionally for some objects (planetary nebula, supernova remnants, and esoteric stuff like that), but not for planets and moons. That's a confusing job, so I leave it to the other professionals. When I do it, it's speculation for my own amusement (or in this case, I hope, for yours too). And it's places like Hyperion, a moon of Saturn, where I know I've made the right choice. The Cassini probe took some close-up snapshots of the weirdo little iceball recently, and look what it saw:
What a mess! I have no desire to try to figure this one out. OK, that's a lie. I'd love to know ...
