via www.boston.com
Intersecting swirling trails left by the earlier passage of dust devils across sand dunes, as they lifted lighter reddish-pink dust and exposed the darker material below. Also visible are darker slope streaks along dune edges, formed by a process which is still under investigation.(NASA/JPL/University of Arizona)
Pixies: Bird Dream Of The Olympus Mons
Even by The Big Picture's consistently high standards, this is a real treat. 35 photographs taken by the Mars Reconnaissance Orbiter since 2006 of the Martian landscape, 187 miles above the surface. They're quite remarkable and worth taking time to look at, landscapes that are both reminiscent of satellite photographs of Earth yet unmistakably alien, unmarked by the mucky paw of humans (well, #9 aside). And is that red weed I see?
(No, of course not - it's part of the Martian South Polar Cap.)
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