Space

Giant Radar Antenna Reflector on NASA-ISRO Satellite in Full ‘Bloom’

Aug. 15, 2025

 

 

The NISAR satellite uses a radar antenna reflector that’s 39 feet (12 meters) in diameter to gather information about Earth’s changing surface. The mission scans nearly all the planet’s land and ice surfaces twice every 12 days. 

Credit: NASA/JPL-Caltech

Seventeen days after NISAR’s launch from southeastern India, an essential piece of science hardware has unfurled in orbit.

Spanning 39 feet (12 meters), the drum-shaped antenna reflector on the NISAR (NASA-ISRO Synthetic Aperture Radar) satellite mission from NASA and the Indian Space Research Organisation (ISRO) successfully unfurled in low Earth orbit. The reflector had been stowed, umbrella-like, until the 30-foot (9-meter) boom that supports it could be deployed and locked in place.

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