Parts of Orion

NASA's Orion spacecraft is carrying humans farther into space than ever before. ESA is providing Orion's European Service Module, the powerhouse that will supply the spacecraft with electricity, propulsion, and life support for its crew, including air, water, and thermal control.

Orion is composed of three main parts: the crew module, where the astronauts will live throughout the mission; the European Service Module, which provides all the consumables needed by the crew as well as power and propulsion; and the Crew Module Adapter which connects the two. The complete service module is composed of both the European Service Module and the Crew Module Adapter.