For decades, the satellite economy has followed a brutal rule: once a spacecraft runs out of fuel or loses the ability to properly maintain its orbit, even if the rest of the hardware still functions, its commercial life is over. Building, launching, and replacing it has been considered easier than reaching and servicing it in space.
Eutelsat and French startup Infinite Orbits are trying to change this dynamic. The satellite operator selected the Toulouse-based company for a life-extension mission in geostationary orbit: the ENDURANCE vehicle will rendezvous with and dock to an Eutelsat satellite, take over part of its orbital control functions, and enable it to continue operating for around five years.
A tow truck 36,000 kilometers from Earth
Geostationary satellites orbit roughly 35,786 kilometers above the equator and must maintain an extremely precise position to keep delivering services. Even when solar panels, transponders, and electronics remain fully functional, the propellant required for station-keeping can become the deciding factor that ends the mission.
A servicer like ENDURANCE changes the equation: instead of replacing the satellite right away, a second spacecraft approaches, performs rendezvous and proximity operations, and docks with the client. From that moment on, it can provide propulsion and control, extending the economic value of an asset already in space.
The hard part is getting close without touching
Docking is only the final step. First, the satellite must be precisely located, its position and rotation understood, and an autonomous approach made without collision. Infinite Orbits has developed navigation technologies based on sensors and computer vision specifically for close-range operations.
The company has already launched Orbit Guard into orbit, a demonstrator dedicated to inspection and proximity navigation around satellites. ENDURANCE marks the transition from demonstration to a commercial service where reliability carries immediate economic value.
Five years can be worth far more than a new satellite
A large geostationary satellite requires hundreds of millions across design, manufacturing, insurance, and launch. If a servicing mission can generate additional years of revenue from an existing asset, the customer can defer replacement costs and manage its fleet with greater flexibility.
The value is especially clear during a phase of technological transition. Operators are investing in new constellations and multi-orbit architectures; keeping a legacy satellite operational for longer allows them to wait until the next generation is ready instead of procuring an interim replacement.
Space becomes about maintenance, not just launches
The biggest implication affects the entire industry. If autonomous rendezvous becomes reliable, the same set of technologies can be used for inspection, relocation, refueling, and eventually repair or assembly. This gives rise to an in-orbit servicing market that looks less and less like the traditional disposable satellite model.
NASA, European agencies, and several private companies have been working on in-orbit servicing concepts for years. A few commercial life-extension missions have already demonstrated that docking with geostationary satellites is feasible. The challenge now is turning exceptional occurrences into a repeatable service.
Orbital sustainability changes too
Extending a satellite’s lifespan does not eliminate the space debris issue, nor does it mean every spacecraft should stay in orbit indefinitely. On the contrary, responsible management requires that GEO satellites be relocated to graveyard orbits at the end of their mission and that proximity operations adhere to strict standards.
Yet the ability to service an asset also opens up new tools to manage malfunctioning satellites or reduce the need for replacement launches. Over the long term, servicing could become a building block of a more circular space economy.
The satellite of the future could be designed to be visited
Today, many satellites in orbit were not built with an external mechanic in mind. Servicers must therefore adapt to structures and interfaces originally designed for other purposes. If the market expands, manufacturers could instead incorporate docking points, refueling interfaces, and modular components right from the design phase.
It would be a profound shift: the satellite no longer as a sealed product born on Earth and destined to die in space, but as an infrastructure that can be upgraded and maintained. The mission between Eutelsat and Infinite Orbits is still a single contract, but it clearly points in this direction. After making rockets reusable, the space industry is beginning to ask whether what remains in orbit should stop being disposable too.
