NISAR is a joint Earth observation satellite developed by:

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A. ISRO and JAXA A.

B. NASA and ISRO B.

C. ESA and ISRO C.

D. NASA and Roscosmos D.

NISAR stands for NASA-ISRO Synthetic Aperture Radar and is a joint Earth-observing mission between NASA and the Indian Space Research Organisation (ISRO).
The satellite was launched by ISRO on 30 July 2025 aboard the GSLV-F16 rocket from the Satish Dhawan Space Centre.
This joint mission represents one of the most significant international partnerships in Earth observation and space science.
NASA contributed the L-band radar and ISRO provided the S-band radar along with the GSLV launch vehicle.
The NISAR mission is designed to continuously monitor Earth’s land and ice surfaces using advanced radar imaging.
It plays a key role in tracking environmental changes such as glacier melting, deforestation, and soil deformation.
The data helps scientists study the impacts of climate change and manage natural disasters like earthquakes and floods.

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