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LaunchApr 21, 2026

Artemis III rocket hardware is on the move. Teams rolled out the top four-fifths of the Artemis III SLS core stage from NASA’s Michoud Assem

Artemis III rocket hardware is on the move. Teams rolled out the top four-fifths of the Artemis III SLS core stage from NASA’s Michoud Assem
Image source: X · Boeing Space
Story Brief

Boeing successfully rolled out what's called the "Top Four-Fifths" of the core stage for the Artemis III moon rocket from the Michoud Assembly Facility in New Orleans, Louisiana.

Why it matters: This is the first time Boeing's Space Launch System program has shipped a core stage without its engine section, a change aimed at accelerating production for future Artemis missions.

"Moving the Top Four-Fifths shows how our production process improvements drive faster, more coordinated execution," says Mike Cacheiro, vice president and program manager for Boeing's Space Launch System program.

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Artemis IISLS