Space debris removal is emerging as a potential new market for the space industry, as the growing number of satellites and fragments in orbit increases the risk of collisions that could threaten essential services on Earth.
Defunct satellites, abandoned rocket stages, and collision fragments can remain in orbit for years or decades. Even small pieces of space junk can damage operational spacecraft travelling at high speeds, creating risks for communications, navigation, weather forecasting and scientific research.
The European Space Agency (ESA) is developing technologies and missions designed to remove unwanted objects from orbit, while commercial companies are exploring how these capabilities could become viable services. However, turning orbital clean-up into a sustainable business is difficult: the engineering must be reliable, the missions affordable, and customers must be willing to pay to remove debris that may not belong to them.
Why removing space debris is becoming more urgent
Earth’s orbital environment is a finite resource. As satellite constellations expand, particularly in low Earth orbit, more spacecraft must share increasingly busy regions of space.
ESA’s space environment assessments have highlighted the scale of the problem, with millions of debris objects estimated to orbit Earth when smaller, untracked fragments are included. While many are too small to be routinely monitored, they can still pose a serious threat to spacecraft because of their high relative velocities.
A collision between two objects can generate thousands of additional fragments, each potentially capable of damaging another satellite. This creates the risk of a cascading process known as Kessler syndrome, in which collisions generate debris that causes further collisions.
The problem cannot be addressed through prevention alone. Measures such as designing satellites to deorbit at the end of their operational lives, removing residual fuel and stored energy, and improving collision avoidance can limit the creation of new debris. However, they do not remove objects already abandoned in orbit.
Active space debris removal aims to address this existing population by sending a specialised spacecraft to rendezvous with a defunct satellite or other targeted object, capture it and alter its trajectory so it re-enters Earth’s atmosphere or moves to a safer orbit.
The challenge is that many older satellites were never designed to be captured. They may be tumbling unpredictably, lack docking interfaces and have no functioning propulsion system. Removing them requires sophisticated navigation, guidance and control technology, as well as carefully planned spacecraft operations.
The technology behind orbital clean-up
Space debris removal involves several technically demanding stages. A removal spacecraft must first locate and approach its target, establish its relative position and movement, and manoeuvre close enough to capture it safely.
Different approaches are being developed, including robotic arms, docking mechanisms and capture systems that can attach to objects without conventional interfaces. Once capture is complete, the removal vehicle must change the combined spacecraft’s trajectory, usually lowering its orbit so atmospheric drag eventually brings the object back into the atmosphere.
The most appropriate method depends on the target’s mass, shape, orbit and condition. Removing a single large satellite can require a dedicated mission, while future systems may seek to capture multiple objects during one flight to improve efficiency.
ESA’s ClearSpace-1 mission is intended to demonstrate the removal of an unprepared object from orbit. It will target the agency’s 95 kg PROBA-1 satellite, launched in 2001, using a spacecraft equipped with four robotic arms. ESA currently lists the planned launch for 2029.
The mission will demonstrate the complex rendezvous, capture and deorbiting operations required to remove an object that was not designed for recovery. It is also intended to help establish the technological foundations for a future commercial debris removal sector.
However, demonstrating that a spacecraft can capture and remove an object does not automatically prove that the process can be repeated economically. Commercial viability will depend on reducing mission costs, improving reliability and developing systems that can serve multiple customers.
Can space debris removal become a viable business?
The commercial challenge is unusual. Removing space debris can benefit the entire space industry, but the organisation paying for a removal mission may not be the one receiving the greatest direct financial benefit.
A defunct satellite can threaten spacecraft operated by many different companies and countries. Yet there is no straightforward commercial mechanism requiring every operator to contribute towards removing the objects that create those shared risks.
This creates a market problem. Satellite operators may be reluctant to pay for the removal of another organisation’s defunct spacecraft, particularly when missions are expensive, and their immediate financial benefits are difficult to quantify.
Removal missions can also be costly because they require specialised spacecraft, launch services, navigation systems and complex operations. A vehicle may need to travel considerable distances within orbit to reach its target, while capturing an uncooperative object introduces additional technical and operational risks.
There are several possible routes towards a more sustainable business model.
- Government contracts: Space agencies can act as early customers, funding demonstration missions and purchasing removal services to establish technical capability.
- Commercial satellite operators: Operators could pay for the removal of their own defunct satellites, particularly where regulation or insurance arrangements make responsible disposal financially important.
- Multi-target missions: A single space debris removal vehicle could potentially capture several objects during one mission, spreading launch and spacecraft costs across multiple removals.
- Integrated in-orbit services: Companies could combine debris removal with satellite inspection, repair, refuelling and life-extension services, creating additional sources of revenue.
Combining removal with wider in-orbit servicing could be particularly important. A spacecraft designed to perform several tasks may generate revenue during more of its operational life than a vehicle built for a single removal mission.
Nevertheless, the economics remain uncertain. Different targets require different manoeuvres and capture systems, and some objects may be too difficult or expensive to remove with current technology. A commercially successful service will need to identify suitable customers and targets while managing technical, financial and regulatory risks.
The UK’s national debris removal mission
The UK is taking a further step towards developing active debris removal as an operational capability.
On 15 October 2026, the UK Government announced a national mission backed by more than £60m to remove two defunct satellites from orbit. The spacecraft will be developed by ClearSpace UK, the British business of the in-orbit services company ClearSpace, using robotic capture and autonomous navigation technologies.
The mission is planned to launch in 2029 and remove the two satellites by 2032. Once captured, the objects will be guided towards Earth’s atmosphere, where they are expected to burn up during re-entry.
Unlike ESA’s ClearSpace-1 mission, which targets the PROBA-1 satellite, the UK programme will focus on two separate, defunct UK-registered satellites. The missions have different targets and programme objectives, although both are intended to demonstrate technologies for safely removing objects that were not designed to be captured.
The UK programme is intended to strengthen domestic expertise in spacecraft servicing, robotic capture, guidance, navigation and control. These capabilities could support future commercial activities beyond debris removal, including satellite repair, refuelling and other services performed in orbit.
However, the programme’s long-term commercial significance will depend on what follows the demonstration. Public investment can build technical capability and provide an initial customer, but a sustainable market will require repeat business, competitive costs, and demand from other satellite operators.
Prevention or removal: Which is the better investment?
Although active debris removal is attracting attention, preventing satellites from becoming debris in the first place is generally more straightforward than recovering them once they have been abandoned.
New spacecraft can be designed with propulsion systems and other mechanisms that allow them to leave congested orbits at the end of their operational lives. Standardised capture interfaces could also make future satellites easier to remove if they fail unexpectedly.
ESA has strengthened its debris mitigation requirements, including a five-year target for vacating valuable low Earth orbits after missions end, where applicable. This is more stringent than the previous 25-year guideline used in many debris mitigation frameworks.
These measures could reduce the number of new objects requiring removal and make future orbital operations safer. However, they do not eliminate the need to address existing debris, particularly large defunct satellites that could generate substantial quantities of fragments in a collision.
For commercial operators, designing for disposal may be cheaper than purchasing a dedicated removal service later. For governments and space agencies, targeted removal missions may be justified where the potential consequences of leaving a particular object in orbit are sufficiently serious.
The two approaches are therefore complementary. Better spacecraft design and end-of-life disposal can limit the growth of the problem, while active removal can address selected objects already posing a risk.
Regulation could determine whether the market grows
The future of space debris removal will depend partly on how governments regulate orbital activity.
If disposal requirements remain inconsistent or difficult to enforce internationally, operators may have limited financial incentives to invest in responsible end-of-life management. Conversely, clear requirements could create more predictable demand for disposal technologies and services.
Potential policy measures include stronger end-of-life disposal rules, financial incentives for responsible satellite operations, clearer liability arrangements and procurement programmes that help establish an initial market for removal services.
International coordination will be important because satellites operate across national boundaries, and debris generated by one mission can threaten spacecraft belonging to many other operators.
Regulation will also need to address the legal and operational complexities of capturing another object’s spacecraft. Removing a defunct satellite requires appropriate authorisation, coordination with the relevant owners and compliance with applicable international obligations.
A mature market will need more than capable spacecraft. It will require rules that clarify responsibilities, support safe operations and provide a reasonable basis for commercial investment.
Building a sustainable economy in orbit
Space debris removal is moving from a largely experimental field towards a potential commercial service, supported by advances in robotics, autonomous navigation and spacecraft operations.
The underlying need is clear. Satellite activity continues to expand, debris remains a growing concern, and existing mitigation measures have not yet made the orbital environment sustainable over the long term.
However, the commercial case is more complicated. Removal missions are technically demanding, expensive to develop and operate, and difficult to monetise when the benefits are shared across the wider space industry.
Government-backed demonstrations, stronger disposal requirements and the development of multi-purpose in-orbit servicing vehicles could help overcome some of these barriers. The key will be to demonstrate that removal can be performed reliably at a cost that customers are prepared to pay.
Ultimately, space debris removal is unlikely to become a viable industry through individual clean-up missions alone. Its prospects will depend on combining targeted removal with better spacecraft design, responsible end-of-life disposal and a regulatory framework that encourages sustainable behaviour.
The commercial opportunity lies in making orbital sustainability part of routine space operations, rather than treating it as an expensive intervention after a satellite has already become a hazard.
