![](https://www.nasa.gov/sites/default/files/thumbnails/image/pia01492-main.jpg)
On the night 175 years ago on Sept. 23-24, 1846, astronomers discovered Neptune, the eighth planet orbiting our Sun. via NASA https://ift.tt/3kEg62S
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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