Photos: Orbital ATK Cygnus Spaceship's Return-to-Flight Mission

Cygnus OA-4 Fairing Excapsulation

The Cygnus spacecraft is encapsulated in the Atlas V rocket fairing at NASA's Kennedy Space Center. Cygnus will deliver over 3500 kg (7700 lbs) of cargo to the International Space Station.

Cygnus OA-4 Fairing Encapsulation at Kennedy Space Center

The Cygnus spacecraft is encapsulated in the Atlas V rocket fairing at NASA's Kennedy Space Center.

Orbital ATK Preparing to Mate the Cygnus Spacecraft

Technicians prepare to mate the two modules of the Cygnus spacecraft together for the OA-4 space station resupply mission at Kennedy Space Center.

Cygnus OA-4 Fairing Encapsulation Atlas V Rocket

The Cygnus spacecraft is encapsulated in the Atlas V rocket fairing at NASA's Kennedy Space Center.

Cygnus's Pressurized Cargo Module

Personnel mate Cygnus's Pressurized Cargo Module and Service Module at Kennedy Space Center, in Florida, after loading the spacecraft's initial cargo.

OA-4 Cargo Loading

Technicians load cargo into the Cygnus Pressurized Cargo Module for the OA-4 mission at Kennedy Space Center, FL.

Cygnus Prepared for Fueling

Workers "unbag" the Cygnus spacecraft after its arrival at the Kennedy Space Center fueling facility in preparation for the OA-4 space station resupply mission.

Two Cygnus Service Modules

The Cygnus Service Module for the OA-4 ISS Cargo Resupply Mission (left) seen in Orbital ATK's satellite manufacturing facility next to a service module for a future mission (right).

OA-4 Service Module Production

Technicians work on the Cygnus Service Module for the OA-4 ISS Cargo Resupply Mission in Orbital ATK's satellite manufacturing facility prior to shipping to the launch site.

OA-4 Service Module Shipping

The Cygnus Service Module for the OA-4 ISS Cargo Resupply Mission is placed in its shipping container for transport to the Cape Canaveral launch site.