NASA Taps ULA's Centaur V for Artemis Upper Stage

NASA has selected United Launch Alliance's Centaur V as the upper stage to support upcoming Artemis lunar missions, a notable change in the agency's launch architecture. The decision comes amid a broader reshuffle of hardware plans intended to accelerate crewed returns to the Moon.

The Centaur V, an evolution of a long-lived upper-stage family, will be integrated with current or planned heavy-lift vehicles to provide the propulsion and in-space maneuvering for trans-lunar injection and other critical mission phases. Officials say the choice reflects Centaur V's technical maturity and flexibility to work with multiple boosters.

Importantly, NASA's announcement focused on the upper stage element only; there is still no final word on which lunar lander systems will carry astronauts from lunar orbit down to the surface. That separate procurement and development effort remains active, with commercial partners and international contributors still in the mix.

The shift to Centaur V may help NASA smooth schedule risks and broaden vendor options after previous reliance on single-path systems. United Launch Alliance has pitched Centaur V as a reliable, flight-proven solution that can scale for different mission profiles.

For engineers and space-watchers, the change underscores how Artemis planning is adapting to technical realities and budgetary pressures. Choosing an upper stage with existing heritage could reduce integration headaches, but mission-level coordination—especially around the still-uncertain lander—will be critical to meet target timelines.

As details are fleshed out, expect further updates on launch vehicle pairings, mission cadence and how the Centaur V will be tested in flight. The lunar lander announcement remains one of the most important pending pieces in NASA's roadmap back to the Moon.