A is for Apogee: the furthest distance of an orbit from Earth.
B is for Beyond Earth Orbit: the intended destination of the Orion.
C is for Crew Module, where the crew of the Orion will ride into space.
D is for Delta IV Heavy Rocket, the propulsion source for the Orion space capsule.
ECLSS- Environmental Control and Life Support System. Each space suit is a little space ship and can protect astronauts from the harshness of space.
F is for Frangible Joints: these joints that unify Orion components are able to disintegrate cleanly into space.
G is for Guppy: the Guppy is used to transport the space capsule from factory to factory as it is assembled.
H is for Heat Shield: this is necessary because of the extreme friction and temperature experienced in space/re-entering the atmosphere.
I is for Isometric Grid: the isometric structure of Orion allows for a super-lightweight, super-strong capsule.
J is for Jettison: "jettisoning" is the term for safely losing elements of the system, i.e: the Delta IV rocket components after launch.
K is for Kinetic Energy: without it, we'd go nowhere.
L is for Launch Abort System: hopefully the astronauts will not have to use it, but this feature gets the capsule safely away from the launch pad in the event of a failure.
M is for Mars: a major destination for Orion.
N is for Near Earth Objects: many of which we hope to study using the Orion system.
O is for Ogive: the geometric term for the shape of Orion's protective sheath.
P is for Parachutes: you had better be sure these are working properly, otherwise CRUNCH.
Q is for Quality: the quality of the team, the quality of the ship-- everything is top-notch at NASA.
R is for Recovery: the most vital part of the mission, where the crew returns home safe with an armload of scientific data.
S is for Service Module: this is where the bulk of the experimental equipment will reside.
T is for Tiles: the special, heat-resistant tiles are absolutely vital for the space capsule to survive re-entry into Earth's atmosphere.
U is for Upper Stage: packed full of reaction control and rockets to enter and alter the orbit of the capsule.
V is for Van Allen Radiation Belts: these are a major obstacle for the astronauts traveling into deep space.
W is for Welding: without perfect welds, the Orion and its crew would be exposed to the vacuum of space.
X is for X-Ray Testing: X-rays are used to ensure that the space capsule is perfectly built, inside and out.
Y is for YUma Proving Grounds: in Arizona, where the Orion capsule will be tested.
Z is for Zero Insertion Force Connector: a newly designed connector for perfectly smooth rendezvous between spaceships.