NISAR, the world's most expensive radar satellite, has begun operations by capturing a detailed image of India's Godavari River Delta. The S-Band radar's high-definition images revealed mangroves, fields, arecanut crops and aquaculture ponds. ISRO released the image as the mission marked 100 days in orbit. NISAR was launched on July 30, 2025, aboard GSLV-F16 from Sriharikota.