Six hours after a Saturday afternoon launch (4:45 p.m. EDT) from the Baikonur Cosmodrome in Kazakhstan a Russian cargo ship successfully docked with the International Space Station (ISS), carrying three tons of supplies for the orbiting lab and the Expedition 36 crew.

Russia’s Progress 52 resupply ship docked with the ISS’s Pirs docking site at 10:26 p.m. EDT on Saturday, while the orbiting lab was over the Pacific Ocean near the west coast of South America. The cargo ship delivered propellant, oxygen, air, water and equipment, including tools necessary to repair spacesuits.