ISRO successfully launches EOS-05 satellite aboard GSLV-F17 rocket

The Indian Space Research Organisation (ISRO) successfully launched the Earth Observation Satellite EOS-05 aboard the Geosynchronous Satellite Launch Vehicle (GSLV-F17) from the Satish Dhawan Space Centre in Sriharikota. The spacecraft was inserted precisely into a sub-geosynchronous transfer orbit, after which its onboard propulsion systems will position it into its designated 36,000 km geostationary slot.

EOS-05 represents a monumental shift in India's space-based surveillance capability, serving as the nation's first operational continuous-monitoring imaging satellite positioned in a high-altitude geostationary orbit. Traditional remote sensing satellites operate in Sun-Synchronous Low Earth Orbits (LEO) at lower altitudes, whereas geostationary placement allows non-stop, real-time observation over the exact same geographical territory.

Key technical parameters highlight the capability of this heavy payload, which relies on multi-band optical, thermal, and infrared imaging sensors. The GSLV-F17 launch vehicle successfully deployed ISRO's indigenous Cryogenic Upper Stage engine to generate necessary thrust, delivering real-time capabilities crucial for rapid flood mapping, cyclone tracking, agricultural estimation, and border surveillance.

This development is vital for competitive examinations under Space Technology and Science. Aspirants should thoroughly prepare the differences between Geostationary Orbits (GEO) and Sun-Synchronous Orbits (SSO), payload capacities of PSLV vs GSLV platforms, and the working mechanisms of indigenous cryogenic engines frequently tested in UPSC Prelims and SSC science sections.