Space Launch System in Podcasts

A crew of four astronauts will launch in the Orion spacecraft on top of the Space Launch System rocket to test rendezvous and docking capabilities between Orion and commercial human landing systems.

So the Space Launch System rocket was composed really of three major components.

Later this morning, the fully stacked Space Launch System rocket and Orion spacecraft will start its slow rollout, basically the final step of NASA's testing and launch rehearsals.