Astronauts on the International Space Station began unloading cargo from the SpaceX Dragon capsule on Monday, a day after the commercially delivered capsule was attached to the station.Tom Marshburn, a space station astronaut and flight engineer,GR 250 & 150 Series Robotic Arm Price List 201209,opened the hatch to the Dragon on Sunday, enabling Commander Kevin Ford of NASA and Canadian Space Agency Flight Engineer Chris Hadfield to enter the cargo craft.

Ford and Hadfield began unloading 1,268 pounds of Dragon's cargo early Monday. Over the course of the next few weeks,GR250/150 Gear Rack drive type single-axis Robot arm,astronauts will then load 2,668 pounds of used items and experiments onto Dragon to be brought back to Earth on March 25.The docking, originally scheduled for Saturday, was pushed back a day while NASA and SpaceX engineers repaired a problem with the Dragon's thruster system.

NASA and SpaceX launched the Dragon spacecraft atop a Falcon 9 rocket Friday morning from Cape Canaveral Air Force Station in Florida.However, shortly after the 10:10 a.m. Friday launch, a malfunctioning propellant valve brought down three of Dragon's four thrusters. It was late afternoon Friday before engineers got all of the thrusters, which enable the spacecraft's maneuvering and altitude control, working.