European Sovereignty Monitor

Defence and space

Sirius Space test fires complete STAR-1 methalox rocket engine for first time

French launch startup Sirius Space Services test fired its complete STAR-1 methalox engine for the first time, at Airborne Engineering's site in southern England, reaching 55 kilonewtons across multiple ignitions this summer.

Verified AI-drafted Sirius Space Services, LinkedIn company post, 12 September 2026

What it does not test. This does not establish an orbital launch, a funding round or a customer contract for Sirius Space.

How this item counts. No movement: no answer to who owns, who operates, whose law governs or who made the parts changes. Weight 0. engine test milestone only, no launch/contract/funding; parts/own/operate unchanged. European Sovereignty Index

How this item was made. Drafted by an AI system (Claude (Anthropic)) from the source cited above and published under the editor’s responsibility without a person reading it first. How the record is made

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