What are IN-SPACe re-entry guidelines | Explained
The Indian National Space Promotion and Authorisation Centre (IN-SPACe) has published India's first dedicated authorisation framework governing the atmospheric re-entry of space objects.
The guidelines distinguish "planned" re-entry — where an operator deliberately controls the timing, trajectory, and burn-up of a returning object — from natural, unplanned re-entry at end-of-mission.
Private operators seeking to conduct a planned re-entry must obtain separate authorisation from IN-SPACe, submitting a detailed risk assessment covering the predicted re-entry corridor, tracking arrangements, technical parameters, and casualty-risk estimates.
Objects expected to burn up almost entirely during natural end-of-mission disposal, leaving negligible debris on the ground, are exempt from this separate re-entry authorisation requirement.
The rules extend India's absolute international liability for space-object damage (assumed by the government under international law) down to private operators domestically, making the norms directly relevant as India's private space sector expands.
IN-SPACe — India's Single-Window Space Regulator
The Indian National Space Promotion and Authorisation Centre (IN-SPACe) is an autonomous nodal agency under the Department of Space, established in June 2020 as part of the 2020 space sector reforms opening participation to non-governmental entities (NGEs). It functions through three directorates — Promotion, Technical, and Programme Management & Authorisation — and is headquartered in Ahmedabad, Gujarat.
Key Details
- Created to promote, authorise, and supervise space activities of private/non-governmental players, and to facilitate shared access to ISRO infrastructure.
- Distinct from NewSpace India Limited (NSIL), the Department of Space's commercial arm that markets ISRO-developed technology and provides launch services on a commercial basis.
- The re-entry authorisation framework is IN-SPACe's latest addition to its regulatory remit, following earlier norms for satellite launches, ground stations, and remote sensing.
The re-entry guidelines are issued directly by IN-SPACe under its statutory mandate to authorise and supervise non-governmental space activities, reinforcing its role as India's single-window regulator for the private space sector.
International Liability for Space Objects — Outer Space Treaty (1967) and Liability Convention (1972)
Under Article VI of the Outer Space Treaty (1967), states bear international responsibility for national space activities — governmental or private — and must authorise and continuously supervise non-governmental actors. Article VII, developed further by the Convention on International Liability for Damage Caused by Space Objects (1972), makes the "launching state" absolutely liable for damage caused by its space objects on the Earth's surface or in airspace, regardless of fault.
Key Details
- The Liability Convention (1972) entered into force in September 1972 and imposes strict/absolute liability for surface damage, and fault-based liability for damage occurring in outer space.
- Because liability attaches to the state (India), not the private operator, India's new IN-SPACe rules pass this absolute-liability standard down to domestic private companies through binding authorisation conditions.
- This mirrors how other spacefaring nations (e.g., the US FAA's re-entry licensing regime) regulate private re-entry to protect the state from unindemnified international liability.
The casualty-risk threshold and mandatory risk assessment in the new guidelines exist precisely because India, as the "launching state," would otherwise bear open-ended absolute liability for any private re-entry mishap under the 1972 Convention.
UN/IADC Space Debris Mitigation Guidelines and Casualty Risk Thresholds
The UN Committee on the Peaceful Uses of Outer Space (COPUOS) adopted Space Debris Mitigation Guidelines in 2007, based on earlier technical guidelines from the Inter-Agency Space Debris Coordination Committee (IADC, established 1993). These guidelines call for limiting debris generation, avoiding intentional break-ups, and ensuring timely post-mission disposal of spacecraft from protected orbital regions (LEO and GEO).
Key Details
- India's new rules require private operators to demonstrate a probability of human casualty from planned re-entry below 1 in 10,000 — a globally used benchmark for re-entry safety in national licensing regimes.
- ISRO's own nodal body for debris tracking and collision avoidance is the ISRO System for Safe and Sustainable Space Operations Management (IS4OM), based in Bengaluru, which conducts Collision Avoidance (COLA) assessments for Indian launches and coordinates India's Debris-Free Space Missions (DFSM) initiative.
- India is a member of both COPUOS and the IADC, aligning its domestic debris-mitigation practice with international technical standards.
The IN-SPACe re-entry guidelines operationalise the casualty-risk and debris-mitigation principles set globally by COPUOS/IADC into a binding domestic authorisation process — closing a regulatory gap as India's private launch and satellite sector grows.
- IN-SPACe established: June 2020, headquartered in Ahmedabad; autonomous body under the Department of Space.
- Casualty-risk threshold for planned re-entry: probability of human casualty must be below 1 in 10,000.
- Outer Space Treaty: 1967 (Articles VI and VII on state responsibility and liability); Liability Convention: 1972 (absolute liability for surface/air damage).
- UN COPUOS Space Debris Mitigation Guidelines: adopted 2007, based on IADC (established 1993) technical guidelines.
- ISRO's debris-tracking nodal body: IS4OM (ISRO System for Safe and Sustainable Space Operations Management), based in Bengaluru.