Carrying almost three tons of food, fuel and supplies for the International Space Station crew, the unpiloted Russian Progress 73 cargo spacecraft launched at 8:10 a.m. EDT (5:10 p.m. Baikonur time) from the Baikonur Cosmodrome in Kazakhstan.
The resupply ship reached preliminary orbit and deployed its solar arrays and navigational antennas as planned. Following a 2-orbit rendezvous, the Russian cargo spacecraft will dock to the orbiting laboratory at 11:35 a.m. NASA Television coverage of rendezvous and docking will begin at 10:45 a.m.
Progress 73 will remain docked at the station for five months before departing in December for its deorbit in Earth’s atmosphere.
The Progress is the second of two cargo resupply ships delivering supplies to the six crewmembers aboard the space station this month. SpaceX’s cargo Dragon spacecraft attached to station on Saturday, July 27, two days after launching on a Falcon 9 rocket from Launch Complex 40 on Cape Canaveral Air Force Station in Florida.