Launch of Northrop Grumman’s 20th Cargo Mission to the Space Station (Official NASA Broadcast)

Northrop Grumman’s 20th cargo resupply mission launches to the International Space Station, powered by a SpaceX Falcon 9 rocket. Liftoff on Tuesday, Jan. 30 is set for 12:07 p.m. EST (1707 UTC). The Cygnus capsule carries over 8,200 pounds (3,700 kg) of cargo, including space station hardware, crew supplies, and research that can only be done in microgravity. Science and technology experiments aboard include a robotic surgery tech demonstration, and tests of a 3D metal printer, semiconductor manufacturing, and thermal protection systems for re-entry.