Arianespace and French start-up BULL are strengthening their cooperation on sustainable spaceflight through joint work on space debris mitigation technology for the Ariane 6 launcher.

The two companies signed a memorandum of understanding in 2024 to explore the integration of BULL's HORN Post Mission Disposal (PMD) device onto the Ariane 6 Dual Launch System. Initial feasibility studies confirmed the effectiveness of deploying the system on Ariane 6.

The HORN PMD features a large deployable sail that accelerates atmospheric re-entry once missions are complete, thereby preventing the creation of orbital debris. Arianespace and BULL are now preparing a flight demonstration of the system, with potential launch slots from 2027.

Arianespace has long emphasized sustainable operations, signing

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