Cygnus

Automated cargo spacecraft.

Orbital ATK won a NASA resupply contract to resupply the ISS using its Cygnus spacecraft as part of NASA's Commercial Orbital Transportation Services (COTS) developmental program in 18th October 2007.

A Cygnus spacecraft first berthed with the ISS on the 29th September 2013.

Contacted by NASA with CRS1 and CRS2(upto 2024) for a total of 18 Resupply missions (19 including a mishap at launch of the 4th mission of the standard Cygnus flight CRS Orb-3) 

The first 4 missions used the standard version of the Cygnus spacecraft, but all since then using the Enhanced Cygnus.

In Jan 2024 the first flight of Cygnus mission NG-20  on a SpaceX Falcon 9 rocket using a specially modified fairing with a hatch to allow for last minute ability to add extra "late-load" cargo before launch.

 ISS-45 Enhanced Cygnus 5 approaching the ISS

Volume:  27.0 m3 Payload up to 3,520 kg

The Enhanced Cygnus can be launched from either Orbital ATK's own Antares rocket or from ULA's Atlas 5 rocket.

Cygnus uses the Canadarm2 robotic arm to grapple the spacecraft and berths it to a Common Berthing Mechanism on the Harmony module of the ISS.

Antares rockets with Cygnus are launched from pad 0A at the Mid-Atlantic Regional Spaceport, a launch complex located NASA’s Wallops Flight Facility on Virginia’s Eastern Shore.

Great time lapse of NG-12: S.S. Alan Bean Cygnus capture on 4th November 2019