Overview
- ISRO’s ISSAR-2025 finds its satellites received more than 150,000 close-approach warnings, with many alerts coming from the US Space Command tracking center.
- The agency carried out 18 collision-avoidance manoeuvres, including 14 in low Earth orbit and four in geostationary orbit, with one risk-mitigation burn for the joint NASA-ISRO mission NISAR.
- Chandrayaan-2 adjusted its plans twice in 2025 to avoid NASA’s Lunar Reconnaissance Orbiter, after coordination that included NASA and private lunar operators.
- Engineers revised 82 manoeuvre plans in low orbit and two in geostationary orbit to prevent new close passes after planned burns, folding many changes into routine upkeep to save fuel.
- ISRO reports 36 Indian rocket stages re-entered by December 31, 2025, no SSLV bodies remained in orbit, and a global launch boom added 4,651 tracked objects as congestion grew.