NASA has selected SpaceX to deliver supplies to the planned Gateway mini-space station in lunar orbit using a new version of the Dragon cargo vehicle launched atop Falcon Heavy rockets.

Carrying a Cygnus supply ship bound for the International Space Station, an Orbital ATK Antares rocket lifted off Monday from the Mid-Atlantic Regional Spaceport at Wallops Island, Virginia.

An extended mission for the Falcon 9 rocket’s second stage after launch Thursday with a space station cargo ship helped demonstrate SpaceX’s ability to perform long-duration flight sequences to inject U.S. military payloads directly into high-altitude geosynchronous orbit.