The Economist -
24 Sep 2015 16:47

IT IS not just on Earth that drones have uses (see article). Three experimental ones, 22cm across and known as Synchronised Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES (even though they are actually truncated rhombic dodecahedrons), have been buzzing around the International Space Station since 2006 (see picture above). Now, a new and more advanced version, the Astrobee, is being designed at the Ames Research Centre, a NASA laboratory in Mountain View, California. The As...
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