CURRENT AFFAIRS

Detailed explanation-1: -NISAR will be the first radar of its kind in space to systematically map Earth, using two different radar frequencies (L-band and S-band) to measure changes in our planet’s surface less than a centimeter across.

Detailed explanation-2: -The NISAR satellite which costs $1.5 billion is set to be launched in January 2024 from Sriharikota aboard the ISRO’s Geosynchronous Satellite Launch Vehicle. The satellite will help scientists better understand climate change, and Earth’s crust, and also help in future resource and hazard management.

Detailed explanation-3: -ISRO and NASA joined hands in 2014 to build the 2, 800 kg satellite. In March 2021, ISRO sent its S-Band SAR payload developed in India to NASA for integration with the L-Band payload built by JPL. “This marks an important milestone in our shared journey to better understand planet Earth and our changing climate.

Detailed explanation-4: -The correct answer is NISAR. NISAR is a joint Earth-observing mission between NASA and ISRO with the goal to make global measurements of the causes and consequences of land surface changes using advanced radar imaging.

Detailed explanation-5: -The difference between ISRO and NASA is that NASA is the civilian space program for aeronautical and aerospace research in the US, while ISRO is the premier space agency of India. NASA, which stands for National Aeronautics and Space Administration, is based in the United States of America.