Descrizione : Cygnus CRS OA-4, also known as Orbital Sciences CRS Flight 4 was the fourth successful flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its third flight to the International Space Station under the Commercial Resupply Services contract with NASA. With the Antares rocket undergoing a redesign following its failure during the Orb-3 launch, OA-4 was launched by an Atlas V rocket. Following three launch delays due to inclement weather beginning on December 3, 2015, OA-4 was launched at 21:44 UTC on December 6, 2015. With a liftoff weight of 7,492 kilograms (16,517 lb), OA-4 became the heaviest payload ever launched on an Atlas V.

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CYGNUS CRS OA 4 (CARGO SHIP) · ATLAS 5 ROCKET

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