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7 September 2026

Launch of ISRO's EOS-05 satellite

The launch of a specific ISRO satellite with strategic and disaster management applications is a direct application of India's space technology achievements and disaster monitoring capabilities, which are frequently tested in the GS3 Science and Technology syllabus.

1 min read Day 2 of 2 2 questions 1 prelims

Notes

  • ISRO successfully launched the EOS-05 satellite, India's first earth-imaging satellite in geosynchronous orbit.
  • The satellite is designed to be locked into Earth's rotation, allowing for continuous observation of specific locations.
  • EOS-05 is currently in a transfer orbit and will be raised to a final altitude of approximately 36,000 km using onboard thrusters.
  • Capabilities include monitoring fast-changing events like floods, cyclones, forest fires, and tracking vegetation, water bodies, and land use.
  • Unlike low-orbit imaging satellites that provide ultra-fine detail but have long revisit times, EOS-05 prioritizes high-frequency observation of broad areas.
  • Previous Indian geostationary satellites (INSAT-3D series) were primarily for weather, while dedicated earth-imaging satellites operated in low, polar, or sun-synchronous orbits.
  • The satellite is categorized by ISRO as 'strategic,' covering both security and weather applications.
  • The launch marks a successful test of the cryogenic stage technology following a 2021 failure.
  • Recent PSLV failures in May and January highlight challenges in maintaining launch dependability.

Part of a longer story

This is day 2 of 2 in Assam Earth Observation Satellite Project, which has been running since 24 August 2026. Reading it whole is usually worth more than reading today alone — the exam asks how something developed.

Questions

  1. Discuss the significance of placing earth-imaging satellites in geosynchronous orbits compared to traditional low-earth orbits for disaster management and environmental monitoring. 150 words
    Attempt this — 150 words in 8 min
    0 / 150 words 8:00
  2. The success of space missions is often measured by technological milestones, yet operational dependability remains a critical challenge. In the context of ISRO's recent launch history, analyze the importance of balancing technological innovation with mission reliability in India's space program. 250 words
    Attempt this — 250 words in 11 min
    0 / 250 words 11:00

Prelims

  1. What is the primary advantage of the EOS-05 satellite being placed in a geosynchronous orbit?

Syllabus

Topics

Sources

250words.in · https://250words.in/daily/2026-09-07/launch-of-isro-s-eos-05-satellite