NASA's Gateway Propulsion System TestedGateway Propulsion System.  NASA

NASA’s Gateway, the orbiting lunar outpost key to the Artemis program, is undergoing tests of its electric propulsion system.

Engineers successfully tested the integration of Aerojet Rocketdyne’s thruster with Maxar’s power processing unit and Xenon Flow Controller.

The Power and Propulsion Element (PPE), built by Maxar Technologies, will supply Gateway with power, communications, and propulsion for orbit adjustments and transitions. The PPE will be joined with the Habitation and Logistics Outpost (HALO) before launch, forming the core of early crewed missions and scientific demonstrations as Gateway expands over time.

source NASA