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# Europe's Themis reusable rocket demonstrator slips to 2026
- URL: https://sovereigntymonitor.eu/news/2025-06-06-themis-first-flight-slip-2026/
- Published: 2025-06-06T12:00:00.000Z
- Updated: 2026-10-21T04:00:26.000Z
- Description: CNES and ArianeGroup's Themis reusable first-stage demonstrator is reported to be slipping its first hop test from late 2025 into 2026, programme insiders said, extending years of delay to Europe's only reusable-rocket project.
- Author: Reidar Balstad
- Tags: Defence and space, #news, #reported, #editor-read

Reported Editor-read [European Spaceflight, 6 June 2025](https://europeanspaceflight.com/first-themis-test-flight-likely-to-slip-to-2026/?ref=sovereigntymonitor.eu)

**What it does not test.** It does not carry an official CNES or ArianeGroup confirmation of the new date, only insider sourcing.

**How this item counts.** This item is dated before the index starts on 1 January 2026, so it does not count in the [European Sovereignty Index](https://sovereigntymonitor.eu/sovereignty-index/).

**How this item was made.** Drafted by an AI system (Claude (Anthropic)) from the source cited above; read and approved by the editor on 2026-10-20\. [How the record is made](https://sovereigntymonitor.eu/method/#how-the-record-is-made)