Photo: Zero Robotics (SPHERES ZR) Flying Inside the Space Station
Two bowling-ball-sized free-flying satellites called Synchronized Position Hold, Engage, Reorient, Experimental Satellites Zero Robotics (SPHERES ZR) are pictured during a test session in the Kibo laboratory of the International Space Station. ISS031-E-140672 (22 June 2012) — high res (1.6 M) low res (91 K)
