NASA backs Centaur upper stage to power future SLS missions
TL;DR
NASA has chosen the Centaur upper stage from ULA to replace the Exploration Upper Stage on the Space Launch System for Artemis 4 and 5, via a sole-source contract that includes a flight spare; this follows NASA’s decision not to pursue the Block 1B EUS and the end of ICPS production, with Centaur favored over Blue Origin’s New Glenn due to familiarity, existing infrastructure, and schedule risks.
- NASA selects Centaur for new SLS upper stage SpaceNews
- Ding-dong! The Exploration Upper Stage is dead Ars Technica
- Centaur V Upper Stage Added To Artemis IV and V NASA Watch
- Boeing’s Contribution to NASA’s Moon Program Just Took a Major Hit Gizmodo
- NASA contract confirms selection of ULA’s Centaur 5 as new upper stage for the SLS rocket Spaceflight Now
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