ISRO Successfully Launches EOS-05: Mission, GSLV-F17 & Key Facts

Context:

Recently, The Indian Space Research Organisation (ISRO) successfully launched EOS-05, an advanced Earth Observation satellite, onboard GSLV-F17 from the Satish Dhawan Space Centre, Sriharikota, on 4 September 2026.

About the Mission:

• • • EOS-05 (Earth Observation Satellite-05) is an advanced imaging satellite developed by ISRO for frequent and large-area observation of the Earth. EOS-05 is India’s first imaging satellite designed to operate from a geosynchronous orbit.
    • Its operation from the geosynchronous regime allows repeated observation of a large geographical region.
    • The mission strengthens India’s capabilities in remote sensing, satellite imaging and space-based Earth observation. It also demonstrates the growing role of space technology in development, disaster management and national security.

Uses of the Mission:

EOS-05 has several important applications:

• • • Disaster Management: Monitoring floods, cyclones, forest fires and other natural disasters.
    • Agriculture: Monitoring crops, vegetation and agricultural conditions.
    • Environmental Monitoring: Tracking changes in forests, land and natural resources.
    • Infrastructure: Supporting urban planning and monitoring large infrastructure projects.
    • Strategic Applications: Providing frequent imagery for surveillance and national security requirements.

Thus, EOS-05 can provide frequent and large-area Earth imagery, complementing India's existing Earth-observation satellite network.

About GSLV:

• • • GSLV (Geosynchronous Satellite Launch Vehicle) is a three-stage launch vehicle developed by ISRO. It is used to place heavy satellites into Geostationary Transfer Orbit (GTO).
    • Its key feature is the use of cryogenic propulsion. It provides higher efficiency and enables the launch of heavy communication, meteorological, and navigation satellites.
    • GSLV has evolved through the Mk I and Mk II versions. Among these, Mk II is the current operational version, which uses an indigenously developed cryogenic stage.

The launch capacity of GSLV is approximately:

• • 2,250 kg to Geostationary Transfer Orbit (GTO)
  • 6,000 kg to Low Earth Orbit (LEO)

The more powerful LVM3 (formerly known as GSLV Mk III) can carry approximately:

• • 4,000 kg to Geostationary Transfer Orbit (GTO)
  • 8,000 kg to Low Earth Orbit (LEO)

LVM3 has been used for important missions such as Chandrayaan-3 and has also been designated as the launch vehicle for the Gaganyaan mission.

Difference between GSLV and LVM3:

Difference between GSLV and PSLV:

 Conclusion:

EOS-05’s successful launch strengthens India’s capabilities in agriculture, disaster management, environmental monitoring, and national security, while GSLV-F17 demonstrates India’s growing expertise in indigenous cryogenic technology and advanced launch systems.