After two-year hiatus, Orbital ATK Cygnus arrives at space station

A capsule carrying 5,300 pounds of food, clothing, spare parts, lab equipment, and science experiments arrived at the International Space Station Sunday morning. Astronauts grabbed the vehicle, called Cygnus, with a robotic arm and pulled it to the station for docking. Over the next month the crew will unload its contents while Cygnus remains tethered to the station. Ultimately, the space station crew will reload the empty vessel with about 4,000 pounds of trash and release it to burn up in the atmosphere in mid-November. But before the vehicle destroys itself, an onboard experiment called Spacecraft Fire Experiment-II, or Saffire-II, will intentionally start a small fire to test how zero gravity and limited oxygen affect flame size and the spread of fire.