ISS028-E-009359 (23 June 2011) --- An unpiloted ISS Progress resupply vehicle approaches the International Space Station, carrying three tons of fuel, air and supplies to the Expedition 28 crew. Progress 43 docked automatically to the aft port of the station's Zvezda service module via the Kurs automated rendezvous system at 12:37 p.m. (EDT) on June 23, 2011. Earth?s horizon and the blackness of space provide the backdrop for the scene.