![](https://www.nasa.gov/sites/default/files/thumbnails/image/f2p6n_hs_color_0.jpg)
This schlieren image shows an Air Force Test Pilot School T-38 in a transonic state, meaning the aircraft is transitioning from a subsonic speed to supersonic. via NASA http://ift.tt/2kHqUNB
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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