Pettit and Kuipers in a run of the SPHERES ZR

ISS030-E-047176 (23 Jan. 2012) --- In the International Space Station?s Kibo laboratory, NASA astronaut Don Pettit (left) and European Space Agency astronaut Andre Kuipers, both Expedition 30 flight engineers, support competing students on the ground in a run of the Synchronized Position Hold, Engage, Reorient, Experimental Satellites Zero Robotics (SPHERES ZR) experiment.