The Orion capsule attaches to a service module for power and propulsion.
Orion is just one piece of a much larger setup: the Space Launch System.
Here, Orion's heat shield is being attached. At 16.5 feet in diameter, according to NASA, its the world's largest.
Before Orion's parachutes slow it down for a splash in the Pacific Ocean, it'll hurtle towards Earth at 20,000 miles per hour.
NASA preps a training regimen recovering Orion after a splashdown.