Rosetta's shadow...

Rosetta's shadow...  This photo was taken on Valentine's Day, on Rosetta's swoop low over Comet 67P.  The camera's resolution at this height is 11 cm (about 4 inches) per pixel – so you're seeing some mighty fine detail here.  If you look closely, you can see deposits of “snow”, shadows of angular features, overlapping “plates”, and, amazingly, the fuzzy shadow of Rosetta itself (near the bottom center)...