During their final use with Artemis I, the engines saw the performance they returned during the Shuttle era: “perfect.” “As our chief engineer likes to say, the performance was perfect.

In its place, NASA installed E2061 into the Engine 4 position on the Artemis II core stage. This engine was the final one ...

Artemis 2's Space Launch System rocket core stage was fitted with 4 RS-25 engines at NASA’s Michoud Assembly Facility in New Orleans. Footage courtesy: NASA/Evan Deroche/Steven Seipel/Eric Bordelon ...