Changes

Unlike the Apollo spacecrafts, in which the Command Module, Service Module, and Lunar Module were all launched as a single spacecraft on a single rocket, the Altair lander and Orion crew capsules are each large enough to require their own separate launches.  The completed spacecraft will then be assembled in orbit before continuing on to the destination.

Unlike the Apollo spacecrafts, in which the Command Module, Service Module, and Lunar Module were all launched as a single spacecraft on a single rocket, the Altair lander and Orion crew capsules are each large enough to require their own separate launches.  The completed spacecraft will then be assembled in orbit before continuing on to the destination.

In light of the disaster that befell [[Space Shuttle Challenger]], the Orion capsule will be able to abort during take-off, separating from the [[Ares IV]] rocket during launch and deploying parachutes.

In light of the disaster that befell [[Space Shuttle Challenger]], the Orion capsule will be able to abort during take-off, separating from the [[Ares V]] rocket during launch and deploying parachutes.