India and NASA Prepare for Landmark NISAR Satellite Launch
Bengaluru – In a significant leap for space-based Earth observation, India is preparing to launch the NASA-ISRO Synthetic Aperture Radar (NISAR) satellite in collaboration with NASA this week. The mission, jointly developed by the Indian Space Research Organisation (ISRO) and the National Aeronautics and Space Administration (NASA), aims to monitor Earth’s changes with unprecedented accuracy.
Launch Window: Expected between July 28 and August 2, 2025, from Satish Dhawan Space Centre, Sriharikota.
🌍 Why NISAR Matters?
The NISAR satellite will use dual-frequency radar technology (L-band and S-band) to study critical changes in the Earth’s surface – such as landslides, melting glaciers, earthquakes, forest loss, and more.
- 🔁 Daily global monitoring
- 📡 Sub-centimeter accuracy
- ☁️ Works day and night, in all weather
“NISAR is not just a satellite, it’s Earth’s real-time guardian,” said a senior ISRO scientist.
🤝 India-NASA Collaboration: A New Era
NISAR marks India’s first radar imaging satellite for global science operations. NASA is contributing the L-band radar system, while ISRO is providing the spacecraft bus, S-band radar, launch vehicle, and support.
The satellite will orbit Earth every 12 days, covering the entire globe and generating massive data for climate scientists, geologists, disaster responders, and policy-makers worldwide.
🛰️ Key Specs of NISAR:
| Feature | Details |
|---|---|
| Type | Dual-Frequency Synthetic Aperture Radar |
| Orbit | Sun-synchronous, 747 km altitude |
| Lifespan | Minimum 3 years |
| Data Volume | Over 85 TB per year |
🌦️ Impact on India & the World
- 🌪️ Early disaster warnings for floods, earthquakes, and landslides
- 🌱 Real-time agriculture monitoring
- 🧊 Glacial tracking in Himalayas
- 🛰️ Boosts India’s space diplomacy on global platforms
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