Jakarta, INTI – On July 30, 2025, the skies over southeastern India witnessed a historic space mission launch. NASA and the Indian Space Research Organization (ISRO) launched NISAR (NASA-ISRO Synthetic Aperture Radar), the first Earth observation satellite combining L-band and S-band radar technology. Weighing 2,392 kilograms, the satellite was deployed from the Satish Dhawan Space Centre using ISRO’s geosynchronous launch vehicle, marking a significant milestone in the space collaboration between the two countries.
Advanced Radar Technology for Global Monitoring
NISAR is equipped with NASA’s L-band and ISRO’s S-band synthetic aperture radar, enabling detection of changes as small as a few centimeters across land, ice layers, and coastal regions. Its sun-synchronous polar orbit allows it to scan the same area every 12 days, providing consistent data for real-time monitoring of Earth’s changes.
Scientific Benefits and Disaster Preparedness
According to NASA scientist Mila Mitra, NISAR will make significant contributions to disaster response, climate monitoring, and long-term scientific research. The satellite can detect early signs of natural disasters such as earthquakes, landslides, volcanic eruptions, and polar ice melting. NASA’s Earth Science Division Head, Karen St Germain, called NISAR the most advanced radar NASA has ever built, with the potential to monitor human-induced changes including agriculture, urbanization, and infrastructure development.
A Collaborative Project with Global Impact
This $1.5 billion USD project will benefit not only India and the United States but also the global community in addressing climate change and natural disasters. NISAR’s mission data will be freely available to users across various disciplines, enabling applications in agricultural planning, infrastructure monitoring, and disaster mitigation. Before full operation, the satellite will undergo a 90-day testing period.
Conclusion
The launch of NISAR represents a significant step in India-US space cooperation and a milestone for global environmental monitoring. With its advanced radar technology and real-time observation capabilities, NISAR paves the way for deeper understanding of Earth’s changes and enhances global disaster preparedness.
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