# ESA Confirms Latest Prometheus Tests Not Connected to Themis Hop Preparations

Source: [European Spaceflight](https://europeanspaceflight.com/esa-confirms-latest-prometheus-tests-not-connected-to-themis-hop-preparations/) · 2026-11-13 · Space
Page: https://themorning.science/story/esa-confirms-latest-prometheus-tests-not-connected-to-themis-hop-preparations-9137c9c469509be4
Kind: other · Impact: low

## In brief

- ESA and ArianeGroup confirmed that Prometheus engine tests carried out in Lampoldshausen in October were independent of preparations for the Themis reusable booster hop.
- The inaugural Themis flight is described by the source as long delayed.
- The confirmation was reported by European Spaceflight on 2026-11-13.

## Why it matters

The statement clarifies that recent Prometheus engine test activity should not be read as a sign of imminent Themis hop progress, which matters for anyone tracking Europe's reusable launcher timeline.

## Timeline

- 2026-10-01: Prometheus engine tests conducted at Lampoldshausen in October 2026, independently of Themis hop preparations
- 2026-11-13: ESA and ArianeGroup confirmation that the tests were not connected to Themis hop preparations, reported by European Spaceflight

## Coverage

- [ESA Confirms Latest Prometheus Tests Not Connected to Themis Hop Preparations](https://europeanspaceflight.com/esa-confirms-latest-prometheus-tests-not-connected-to-themis-hop-preparations/) — European Spaceflight, 2026-11-13

Tags: prometheus engine, themis, ariane group, esa, reusable rockets

---

Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science