Key Details
The parliamentary reply distinguishes between preventing new debris, which is already covered by policy and regulatory guidance, and removing existing debris, for which ISRO has initiated precursor demonstrations but has not yet announced an operational system or implementation timeline..
Area | Current position |
|---|---|
Emerging risk | Internet constellations comprising thousands of satellites are increasing congestion and collision risks in low Earth orbit |
Debris Free Space Mission | Seeks wider compliance with debris-mitigation and end-of-life disposal practices across Indian space activities |
Regulatory framework | Indian Space Policy requires internationally recognised mitigation practices; IN-SPACe’s 2024 norms encourage post-mission disposal or rapid natural orbital decay |
Space monitoring | ISRO is pursuing indigenous space-object monitoring while continuing international data sharing |
Active debris removal | Preparatory activities and in-orbit demonstrations have begun, but operational capability and timelines remain unspecified |
International coordination | ISRO participates in the IADC and UN forums dealing with debris mitigation, spaceflight safety and long-term sustainability |
Satellite Constellations Increase Orbital Risk
Large satellite-internet constellations can place thousands of spacecraft in particular orbital shells. Collision-avoidance systems can reduce risk while satellites remain operational, but failed or non-responsive spacecraft may no longer be able to manoeuvre.
A second risk comes from small debris that is difficult to track but large enough to damage or disable a satellite. A collision can generate further fragments, adding to congestion and increasing subsequent collision risk.
Orbital safety therefore depends on more than collision warnings: satellites must remain trackable and manoeuvrable, operators need coordination mechanisms, and spacecraft must be removed from operational orbits after their missions.
Prevention Is Further Advanced Than Debris Removal
India’s current approach focuses primarily on preventing additional orbital debris. The Indian Space Policy requires adherence to recognised mitigation guidelines, while IN-SPACe encourages operators to provide for controlled disposal or re-entry within a specified period.
The Debris Free Space Mission seeks to strengthen these practices. ISRO is also expanding indigenous space-surveillance capabilities to improve tracking and collision warnings for Indian spacecraft.
Removing existing debris is more difficult. The Department of Space says ISRO has initiated on-orbit activities that are precursors to Active Debris Removal, but the reply does not specify the technologies demonstrated, objects targeted or timeline for operational capability.
What Is Active Debris Removal? It involves approaching and capturing or redirecting a non-functional satellite or other large debris object so it can be moved to a safer orbit or disposed of through atmospheric re-entry.
Orbital Safety Requires International Coordination
ISRO has participated in the Inter-Agency Space Debris Coordination Committee since 1996 and contributes to UN work on space sustainability and situational awareness.
International data sharing remains important because no country can continuously observe every orbital object. But mitigation guidelines ultimately depend on national authorisation and operator compliance. As India’s commercial space activity expands, IN-SPACe will play a larger role in translating sustainability standards into operating requirements.
Policy Relevance
End-of-life disposal should be enforceable at authorisation. Operators need credible disposal plans, sufficient fuel and reliable command capability before launch approval is granted.
Monitoring capacity must keep pace with launch activity. Indigenous sensors, data processing and conjunction assessment will be increasingly important as domestic satellite numbers grow.
Failed satellites require contingency planning. Regulatory standards should address loss of communication or manoeuvrability rather than assuming every spacecraft will remain controllable.
Active removal raises legal and liability questions. Ownership, consent, responsibility for damage and access to non-functional objects must be resolved alongside technical development.
Progress needs measurable milestones. The Debris Free Space Mission would benefit from public indicators covering disposal compliance, collision warnings, manoeuvres, failures and removal demonstrations.
Relevant Question for Policy Stakeholders: How should India convert debris-mitigation guidance into enforceable operator obligations while developing the frameworks for active debris removal?
Follow the Full Parliamentary Reply Here: ISRO’s Measures to Address Space Debris from LEO Satellite Constellations