After delivering more than 6,400 pounds of cargo, a SpaceX Dragon cargo spacecraft will depart the International Space Station on Sunday, Sept. 17. NASA Television and the agency’s website will provide live coverage of Dragon's departure beginning at 4:30 a.m. EDT. Flight controllers will use the space station’s Canadarm2 robotic arm to detach Dragon, which arrived Aug. After delivering more than 6,400 pounds of cargo, a SpaceX Dragon cargo spacecraft will depart the International Space Station on Sunday, Sept. 17. NASA Television and the agency’s website will provide live coverage of Dragon's departure beginning at 4:30 a.m. EDT. Flight controllers will use the space station’s Canadarm2 robotic arm to detach Dragon, which arrived Aug.