The Indian Space Research Organisation (ISRO) is actively confronting the twin challenges of Low Earth Orbit (LEO) satellite congestion and accumulating space debris, with targeted mitigation measures underway, Parliament was informed on Thursday, 13 August. Minister of State for Science and Technology Dr Jitendra Singh made the disclosure in the Rajya Sabha, outlining India's institutional, regulatory, and international responses to one of the most pressing challenges in modern space operations.

The Debris Free Space Mission

ISRO's Debris Free Space Mission is central to India's strategy, designed to safeguard space assets and limit further debris generation through Active Debris Removal (ADR) and complementary measures. The initiative also implements internationally recognised guidelines on end-of-life disposal of satellites — a critical step as orbital clutter grows.

Dr Singh noted that the Indian Space Policy mandates adoption of these guidelines across the Indian space programme, covering end-of-life disposal and related debris mitigation measures. The Norms, Guidelines and Procedures released by IN-SPACe in 2024 further encourage all Indian space actors to adopt adequate post-mission disposal measures or ensure their assets have very limited orbital life through natural orbital decay.

The Scale of the Challenge

Internet satellite constellations — often comprising thousands of satellites — are raising collision risks in crowded orbital regions. Some satellites may fail on-orbit and become unable to manoeuvre away from potential collisions. Small, untraceable debris compounds the problem: such fragments cannot be avoided through collision avoidance manoeuvres and are too small to shield against adequately. A single impact, Dr Singh warned, can cause mission-ending damage, rendering a satellite non-functional and generating yet more debris in a cascading cycle.

India's Institutional Engagement

India has maintained a long-standing presence in global space debris governance. ISRO has been a member of the Inter-Agency Space Debris Coordination Committee (IADC) — considered the most recognised body on space debris monitoring and mitigation — since 1996. The IADC regularly deliberates on debris-related matters and revises mitigation guidelines in response to the evolving orbital environment.

India is also represented in the United Nations Committee on the Peaceful Uses of Outer Space (UN-COPUOS), the UN Scientific and Technical Subcommittee (UN-STSC) Working Group on Long-Term Sustainability, and the Expert Group on Space Situational Awareness (SSA). These forums address debris mitigation, safety of space operations, and long-term sustainability of the space environment.

Self-Reliance and International Collaboration

Dr Singh stressed that comprehensive Space Situational Awareness requires both international collaboration and data sharing. In parallel, India will pursue self-reliance through indigenous capacity building for space object monitoring, alongside innovative R&D to address emerging challenges. This dual-track approach — global cooperation combined with domestic capability — reflects India's broader strategic posture in space.

As satellite launches accelerate globally and LEO becomes increasingly congested, ISRO's policy and technical responses will be closely watched by the international space community.