Instead, from Artemis V onwards NASA will rely on newly-built powerplants of this kind. And here is the first newly-built RS-25 Space Shuttle engine that is not meant to be used on the Space Shuttle.

The engine section of the second NASA Space Launch System (SLS ... beginning of the decade in the wake of the end of the Space Shuttle Program and the cancellation of the Constellation Program.

Alongside certification of the existing “adaptation” engines stored from Shuttle days, NASA separately contracted Aerojet Rocketdyne in late 2015 to restart production of new engines and ...