The Orbital ATK Cygnus cargo ship arrives at the International Space Station. It has now docked on the station's Earth-facing port of the Unity module via the CanadArm 2 robotic arm. The spacecraft's arrival supports the crew members' research "off the Earth to benefit the Earth". The Cygnus is delivering more than 7,700 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory to support dozens of approximately 250 science and research investigations that will occur during Expeditions 47 and 48. Beginning with this mission, Cygnus is equipped with a NanoRacks External Cygnus Deployer for CubeSats that will provide opportunities for small satellites to be deployed from Cygnus after the vehicle departs from the ISS.