Beyond Xenon: How Water Propulsion Is Quietly Rewriting the Rules of Satellite Mobility

Introduction: Propulsion as the New Lever of Orbital Power Space is no longer a permissive environment—it is an increasingly congested, contested, and strategically consequential domain. The rapid expansion of satellite constellations, the militarization of low Earth orbit (LEO), and the growing dependence of economies on space-based services have transformed orbital mobility into a core determinant…