The unmanned Progress 50 supply ship blasts off from Kazakhstan's Baikonur Cosmodrome on Feb. 11, 2013.
The unmanned Progress 50 supply ship streaks into space on Feb. 11, 2013.
The unmanned Progress 50 supply ship blasts off from Kazakhstan's Baikonur Cosmodrome on Feb. 11, 2013.
The unmanned Progress 50 supply ship sits on the pad at Kazakhstan's Baikonur Cosmodrome a few minutes before liftoff on Feb. 11, 2013.
The unmanned Progress 50 supply ship sits on the pad at Kazakhstan's Baikonur Cosmodrome a few minutes before liftoff on Feb. 11, 2013.
An infographic profile of the Progress cargo ship used to service the International Space Station.
The Russian Flight Control Room is seen a short time before the scheduled docking of the robotic Progress spacecraft, Feb. 11, 2013.
The International Space Station awaits the robotic Progress 50 supply ship on Feb. 11, 2013.
This view shows how the Progress 50 robotic supply ship "sees" the International Space Station during the fly-around prior to docking on Feb. 11, 2013.
The unmanned Progress 50 supply ship is spotted by the International Space Station as it nears docking on Feb. 11, 2013.
The Progress 50 robotic supply ship is seen as a tiny dot above the Earth as it approaches the International Space Station during the fly-around prior to docking on Feb. 11, 2013.
The Progress 50 robotic supply ship approaches the International Space Station during the fly-around prior to docking on Feb. 11, 2013.
The Progress 50 robotic supply ship approaches the International Space Station during docking on Feb. 11, 2013.
The Progress 50 robotic supply ship flies in a parallel course with the International Space Station during docking on Feb. 11, 2013.
The Progress 50 robotic supply ship's display crosshairs line up with the International Space Station during docking on Feb. 11, 2013.
The Progress 50 robotic supply ship (at lower left) successfully docked with the International Space Station on Feb. 11, 2013.