Bok
09-10-2015, 07:38 PM
Why does Saturn look like it's been painted with a dark brush in this infrared image, but Dione looks untouched?
More... (http://www.nasa.gov/image-feature/jpl/cassini/pia18336/methane-painting)
More... (http://www.nasa.gov/image-feature/jpl/cassini/pia18336/methane-painting)