ISRO’s ‘zero orbital debris’ milestone

ISRO’s ‘zero orbital debris’ milestone


The Indian Space Research Organisation (ISRO) has achieved a remarkable feat with its PSLV-C58/XPoSat mission, leaving virtually zero debris in Earth’s orbit.

  • This achievement marks a significant step forward in addressing the growing concern of space debris, a pressing issue as the number of satellites in orbit continues to rise.


GS-03 (Science and technology)

Facts for Prelims:

  • Zeroing in on Space Debris: Zero orbital debris refers to the aspiration of having no space debris or space junk, which poses significant challenges but is essential for ensuring the sustainability of future space endeavors.
  • Understanding Orbital Debris: Orbital debris, comprising defunct satellites, spent rocket stages, and fragments from collisions, presents a growing threat to operational satellites, the International Space Station (ISS), and upcoming space missions.

Dimensions of the Article:

  • Background
  • Importance of cleaning the Earth’s Orbit
  • How It Was Achieved
  • Strategies for Achieving Zero Orbital Debris
  • Challenges and Global Efforts


  • As the number of satellites in Earth’s orbit increases, so does the risk of space debris. These debris, which include defunct satellites, fragments of spacecraft, and remnants from anti-satellite missile tests, pose a significant threat to space assets due to their high speeds and sheer volume.
  • The low Earth orbit (LEO), extending from 100 km to 2000 km above the Earth’s surface, is particularly vulnerable, housing vital satellites for communication, navigation, and intelligence.