Curiosity and the dark dune of Mars... Curiosity has been studying some dark dunes on Mars for several weeks now. The photo at right shows the main object of its study. Go, Curiosity! Via APOD, of course. Full resolution photo here.
And speaking of Curiosity ... check out the recent photo it took (with the mast camera) at left. The photo shows a soil analysis system mounted on Curiosity's deck. The interesting thing to me here is all the accumulated dust. Curiosity needs a good windstorm to blow all that crap off!