![](https://www.nasa.gov/sites/default/files/thumbnails/image/pia22182.jpg)
Layers, probably sedimentary in origin, have undergone extensive erosion in this image from NASA's Mars Reconnaissance Orbiter (MRO) of Shalbatana Valles, a prominent channel that cuts through Xanthe Terra. via NASA http://ift.tt/2DWtLh3
The blue tentacle-like arms containing gecko-like adhesive pads, attached to an Astrobee robotic free-flyer, reach out and grapple a "...
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