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ISRO-NASA Joint Mission NISAR Satellite Operational; Will Map Earth Every 12 Days.

International | Dated: 07 Nov 2025

The NISAR (NASA-ISRO Synthetic Aperture Radar) satellite, a joint earth observation mission between the space agencies of India and the United States, has become fully operational. Launched earlier this year, the satellite will map the Earth every 12 days, providing high-resolution data for disaster management, climate change monitoring, and studying changes in the Earth's crust, ice sheets, and ecosystems. NISAR utilizes two frequency bands (L-band and S-band) of Synthetic Aperture Radar (SAR) to provide high-resolution images irrespective of weather conditions.

🎯 Key Highlights:

  • NISAR stands for NASA-ISRO Synthetic Aperture Radar.
  • The satellite will map the entire Earth every 12 days.
  • NISAR uses L-band and S-band SAR to provide all-weather images.

💡 Other Important Facts:

  • The SAR technology allows it to penetrate clouds and foliage, offering uninterrupted data.
  • It is one of the most expensive earth observation satellites built to date.
  • The data will be crucial for predicting crop yield and managing water resources.

📚 Test Your Knowledge:

The NISAR mission is a joint project between ISRO and which other space agency?

Correct Answer: NASA

🚀 Quick Recap:

About NISAR

  • (i) Mission Type: Earth Observation (ii) Technologies: Dual-frequency SAR (L-band & S-band)
  • (iii) Key Applications: Climate change, ecosystems, natural hazards (iv) Coverage Cycle: 12 days.