What’s on the other side of a Martian sand dune? Our Curiosity rover, partway through the first up-close study ever conducted of extraterrestrial sand dunes, is providing dramatic views of a dune's steep face, where cascading sand has sculpted very different textures than the wavy ripples visible on the dune's windward slope. Details: http://go.nasa.gov/1INu7Vg
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