English: 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. It was to return to the orbiting outpost on 7/23 to perform an automated linkup using a new version of the Kurs rendezvous system, Kurs-NA. However, the re-docking of the Progress 47 to the space station has been postponed due to an apparent failure in the new Kurs-NA rendezvous system. Progress 47 flew approximately 1.8 miles below the station to a safe distance away from the orbiting outpost, where it will remain until another attempt is made to re-rendezvous with the space station.