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315 successful space launches in 2025, finds Indian Space Situational Assessment Report

April 08, 2026 5 min read Science & Technology International Relations GS Paper 3 (Science & Technology Space Environment)
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What Happened

  • The Indian Space Research Organisation (ISRO) released the Indian Space Situational Assessment Report (ISSAR) for 2025, revealing 315 successful space launches during the year.
  • Approximately 4,651 objects were placed into orbit across these 315 launches — the highest number of payloads deployed in a single year on record.
  • The report assessed the current state of Earth's orbital environment, space debris levels, conjunction risks to Indian satellites, and India's Space Situational Awareness (SSA) capabilities.
  • The findings highlight a rapid increase in orbital congestion driven primarily by large commercial constellations (such as SpaceX Starlink and Amazon Project Kuiper).
  • ISRO's NETRA (Network for space object Tracking and Analysis) project continues to expand with new radar installations and optical telescope deployments.
  • Key infrastructure developments: radar station construction in Assam (Chandrapur), optical telescope in Ladakh, and revival of the Multi-Object Tracking Radar (MOTR) at Sriharikota.
  • The NETRA system can detect debris as small as 10 cm in Low Earth Orbit (LEO) and larger objects in Geosynchronous Orbit (GEO).
  • The Directorate of Space Situational Awareness and Management (DSSAM) in Bengaluru operates the data fusion and control centre — ingesting sensor data, correlating orbits, predicting conjunctions, and issuing alerts.

Static Topic Bridges

Project NETRA — India's Space Situational Awareness System

Project NETRA (NEtwork for space object TRacking and Analysis) is ISRO's indigenous Space Situational Awareness initiative, announced publicly in September 2019. It gives India an independent capability to monitor, catalogue, and predict the behaviour of orbital debris and near-Earth objects that could endanger Indian satellites.

  • Prior to NETRA, ISRO relied primarily on data from the United States Space Command (USSPACECOM) for conjunction warnings.
  • A 2021 internal report noted that ISRO carried out 19 collision-avoidance manoeuvres that year, up from just 3 in 2015 — reflecting rapid increase in orbital congestion.
  • NETRA's sensor suite includes: phased-array radars (including MOTR at Sriharikota and the new Chandrapur radar), optical telescope networks at Ponmudi, Mount Abu, and Leh.
  • Can detect debris ≥ 10 cm in LEO (altitude: 160–2,000 km) and larger objects in GEO (altitude: ~35,786 km).
  • Data processing is handled by DSSAM, Bengaluru, which also maintains India's national space object catalogue.
  • In 2024, ISRO released the first ISSAR compiled using NETRA data, formalising annual reporting of India's space environment assessment.
  • ISRO's stated ambition: zero orbital debris from Indian missions by 2030.

Connection to this news: The 2025 ISSAR documents the sharp increase in the number of objects NETRA must track — 315 launches placing 4,651 objects. This validates the urgency of ISRO's investment in radar and optical capacity under NETRA.

Space debris comprises non-functional spacecraft, abandoned rocket bodies, fragments from collisions and explosions, and other man-made objects in orbit. It poses collision risks to operational satellites and crewed missions.

  • As of 2025, over 35,000 trackable objects larger than 10 cm are in Earth orbit; millions of smaller fragments exist that cannot currently be tracked.
  • Kessler Syndrome: a theoretical cascade effect where a single collision generates debris that causes further collisions, potentially rendering certain orbital altitudes unusable — named after NASA scientist Donald Kessler (1978).
  • Major debris-generating events: China's anti-satellite test (2007), the Iridium 33–Cosmos 2251 collision (2009), and Russia's anti-satellite test (2021).
  • The Inter-Agency Space Debris Coordination Committee (IADC) — of which ISRO is a member — sets voluntary guidelines including the "25-year rule" (deorbit within 25 years of end-of-life) and passivation of rocket stages.
  • There is no binding international treaty on space debris — the Outer Space Treaty (1967) and Registration Convention (1976) have limited provisions on liability and debris mitigation.
  • The UN Committee on the Peaceful Uses of Outer Space (COPUOS) adopted Long-term Sustainability (LTS) guidelines for space activities in 2019.

Connection to this news: With 4,651 new objects placed in orbit in 2025 alone, the debris environment is worsening faster than current mitigation measures can address. The ISSAR data will inform India's positions in international forums on space traffic management and debris liability.

Commercial Space Race and Mega-Constellations

The dramatic increase in 2025 space launches is largely driven by private companies deploying large satellite constellations for broadband internet and Earth observation services.

  • SpaceX Starlink: has deployed over 7,000 satellites as of early 2026, with regulatory approval for up to 42,000. It contributes the largest share of new orbital objects.
  • Amazon Project Kuiper: has begun constellation deployment with plans for 3,236 satellites.
  • OneWeb (Eutelsat), Planet Labs, and others also maintain large LEO constellations.
  • These constellations operate primarily in LEO (300–600 km) — the most congested region — and each launch may place 40–60 satellites simultaneously.
  • India's own commercial space sector is growing under IN-SPACe (Indian National Space Promotion and Authorisation Centre) established in 2020; companies like Skyroot Aerospace, Agnikul Cosmos, and Pixxel have entered the market.
  • India's Space Policy 2023 formally opens the sector to private players and mandates ISRO to share infrastructure.

Connection to this news: The 315 launches and 4,651 objects in orbit reflect this commercial mega-constellation boom. ISRO's NETRA system must scale accordingly to protect India's ~50+ operational satellites.

Key Facts & Data

  • 315 successful space launches globally in 2025 (ISSAR 2025 finding).
  • 4,651 objects placed in orbit in 2025 — highest single-year payload deployment on record.
  • For comparison: 254 successful launches in 2024 (261 attempts — already a record at the time).
  • NETRA can detect debris ≥ 10 cm in LEO; data fusion at DSSAM, Bengaluru.
  • ISRO carried out 19 collision-avoidance manoeuvres in 2021, up from 3 in 2015.
  • New Chandrapur (Assam) radar under construction; optical telescope in Ladakh operational.
  • ISRO's zero-debris goal: by 2030.
  • India joined IADC; OST (1967), Registration Convention (1976) govern space objects internationally.
  • IN-SPACe (2020) regulates India's growing private space sector under Space Policy 2023.