Science, Discovery, Tech and Environment · 31 March 2026
NASA-ISRO NISAR satellite captures Mount St. Helens radar image through clouds
Exam-focused facts from the 31 March 2026 current affairs briefing.
Key facts
- NASA and Indian Space Research Organisation (ISRO) joint mission NISAR obtained a radar image of Mount St. Helens on 10 November 2025.
- NISAR's radar penetrates clouds, enabling year-round monitoring of Earth's surface changes.
- Colour-coded radar maps highlight roads and buildings in magenta, landforms or moisture in yellow, forests and wetlands in yellow-green, water or bare mountaintops in dark blue, and human impact areas like deforestation in purple.