EM-1 will be the first flight of Orion’s European Service Module, also pairing it with the Crew Module for the first time, with hundreds of test objectives to be evaluated during the mission.

The two modules that will fly NASA’s first solo Orion flight into lunar orbit and back are going through standalone testing in the lead up to becoming a mated spacecraft. The Crew and Service ...

With Orion, all that automation also frees up ... engineers are considering two dozen 100-pound thrusters. The service module will house a large orbital maneuvering system engine plus, possibly ...

The solar array wings, attached to the service module, deploy after Orion reaches space to power the spacecraft. Orion's service module provides propulsion, thermal control, and electrical power ...