Fortunately, we have a brand new rocket. I think it will be the largest in the world...15% more thrust than the Saturn-5.
On the SLS everything gets thrown away every launch except for the Orion capsule.
That’s why the SLS is projected to cost $2 Billion per launch vs $2 Million for Starship.
One Thousand times less!
I believe the SRBs are reusable, since they’re the same one used on the shuttle, with 2 extra segments, each.