Progress Undocks for Engineering Tests

ISS032-E-008455 (22 July 2012) --- The unpiloted Russian Progress 47 resupply spacecraft temporarily undocks from the Pirs Docking Compartment of the International Space Station on July 22, 2012 in order to perform a series of engineering tests during re-docking designed to verify an upgraded automated rendezvous system that will facilitate future dockings of Russian vehicles to the space station. Progress 47 separated from the station to a distance of about 100 miles and held position for 24 hours.