The U.S. and India just launched NISAR, a powerful radar satellite that will be able to monitor changes in Earth's surface that are as small as a centimeter.

Carrying an advanced radar system that will produce a dynamic, three-dimensional view of Earth in unprecedented detail, the NISAR (NASA-ISRO Synthetic Aperture Radar) satellite has launched from Satish Dhawan Space Center in Sriharikota,

Unlike optical sensors, the synthetic aperture radar (SAR) at the heart of the Nisar mission doesn’t rely on visible light. SAR uses microwaves, allo