Cygnus was developed by Orbital Sciences Corporation, partially funded by NASA under the agency's Commercial Orbital Transportation Services program. To create Cygnus, … See more

Several scientific investigations were sent to the ISS aboard the Cygnus. These are four of the projects highlighted by NASA:
Packed systems
"Packed Bed Reactor Experiment: Water Recovery Series" will evaluate gravity's effects on eight test … See more

• Northrop Grumman CRS-21 – NASA website
• NASA Commercial Resupply Mission NG-21 – Northrop Grumman website See more

The Cygnus spacecraft will be loaded with a total of 3,857 kilograms (8,503 lb) of cargo and supplies before its launch, including 3,843 kilograms (8,472 lb) of pressurised and 14 kilograms (31 lb) of unpressurised cargo.
The cargo manifest … See more

While most Cygnus missions have been launched atop Northrop Grumman's Antares rocket from the Mid-Atlantic Regional Spaceport, NG-21 was the second of three … See more

• Uncrewed spaceflights to the International Space Station See more