Mars sand dunes caught in motion
New images of Mars show sand dunes and ripples moving across the surface at dozens of locations, and shifting up to several metres, revealing that the planet's sandy surface is more dynamic than previously thought.
Source: http://www.cosmosmagazine.com/news/5002/mars-sand-dunes-caught-motion
Gina Philips Gisele Bündchen Giuliana DePandi Giulianna Ramirez Grace Park Gretha Cavazzoni Gwen Stefani