Spheres drone

One of the Spheres – Synchronized Position Hold Engage and Reorient Experimental Satellite – drones resident in the Space Station. With 12 carbon dioxide gas thrusters enabling rotation and movement in all direction, the bowling ball-sized Spheres are essentially free-floating mini-spacecraft within the Station, used for testing a wide variety of technology. This is the imaging-focused 'Vertigo' drone: Visual Estimation for Relative Tracking and Inspection of Generic Objects.