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 built for the shuttle. NASA certified the engine for flight in 2008, and it ...

Find out about the integration of the Space Launch System rocket’s upper stage, which brings NASA's Artemis II crewed test ...

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 ...

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The agency's launch director halted its planned launch of the Artemis I rocket — the most ... to evaluate why a bleed test to get the RS-25 engines on the bottom of the core stage to the proper ...