Orbital ATK OA-9 Antares Launch
An Orbital ATK Antares rocket will launch of the 10th Cygnus cargo freighter on the ninth operational cargo delivery flight to the International Space Station. The mission is known as OA-9. The rocket will fly in the Antares 230 configuration, with two RD-181 first stage engines and a Castor 30XL second stage.
Launch window: TBD