The Space Launch System (SLS) is a rocket which is based on the American heavy expendable launch vehicle SLS. It was previously based on the Ares IV and V rockets that were supposed to launch the Orion Crew Exploration Vehicle.
The SLS is comprised of:
- The Exploration Upper Stage is a large 2nd stage in real life, but has not been added to the game.
- The SLS prior to 1.5.0 was the white variant of the SLS.