The NASA-ISRO Synthetic Aperture Radar (NISAR) satellite has reached a historic milestone by delivering its first radar images of Earth’s surface, kicking off a new era of international space collaboration. NASA and ISRO collaboratively designed the mission, which seeks to provide highly detailed and precise data to enable scientific research and practical applications around the world.
ISRO launched NISAR on July 30, 2025, and it is equipped with cutting-edge radar technologies capable of imaging Earth with remarkable clarity. On August 21, NASA’s Jet Propulsion Laboratory’s L-band radar took detailed images of Mount Desert Island, Maine. The radar data revealed diverse surface types, with water appearing black, forests green, and hard surfaces like buildings and bare land in magenta. The images clearly showed the coastal town of Bar Harbour, indicating the satellite’s capacity to distinguish between diverse land covers.
On August 23, the satellite captured images of the Forest River valley in North Dakota, proving its versatility. These images highlighted farmland, wetlands, irrigation plots, and crop patterns, providing insight into agricultural monitoring.
NISAR is unique for combining NASA’s L-band and ISRO’s S-band radar technologies, allowing it to orbit Earth every 12 days at 747 kilometres altitude and detect features as small as five meters.
