Cygnus cargo ship berthed at space station
The International Space Station’s robot arm captured the Cygnus cargo ship before attaching it to a docking port. Image: NASA TV. An unpiloted Northrop Grumman Cygnus cargo ship carrying four tons of supplies and equipment caught up with the International Space Station early Friday to wrap up a smooth two-and-a-half-day rendezvous. As the two spacecraft …