![](https://www.nasa.gov/sites/default/files/thumbnails/image/pia22240.jpg)
This image from NASA's Mars Reconnaissance Orbiter (MRO) shows streaks forming on slopes when dust cascades downhill. via NASA http://ift.tt/2EcMFBx
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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