this post was submitted on 30 Jul 2025
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Spaceflight

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Mission info

| Scheduled for (UTC) | 2025-07-30, 12:10 | |


|


| | Scheduled for (local) | 2025-05-30, 17:40 (IST) | | Launch site | Second Launch Pad, Satish Dhawan Space Centre, India | | Launch Vehicle | GSLV Mark II | | Payloads | NISAR | | Payload mass | 2,393.0 kg | | Mission success criteria | Sun-Synchronous Orbit |

Webcasts

| Stream | Link | |


|


| | ISRO | https://www.youtube.com/watch?v=OgC1MxtCwq4 | Space Affairs | https://www.youtube.com/watch?v=yFLaJHWwNN8 | The Launch Pad | none | International Rocket Launches | https://www.youtube.com/watch?v=UJqzghdm8m4

Stats

Sourced from NextSpaceflight:

โ˜‘๏ธ 2nd GSLV mission of 2025, 18th overall

โ˜‘๏ธ 3rd ISRO mission this year, 99th overall

Mission details

The NASA-ISRO Synthetic Aperture Radar, or NISAR satellite, will use advanced radar imaging to map the elevation of Earth's land and ice masses 4 to 6 times a month at resolutions of 5 to 10 meters. It is designed to observe and measure some of the planet's most complex natural processes, including ecosystem disturbances, ice-sheet collapse, and natural hazards such as earthquakes, tsunamis, volcanoes and landslides.

Under the terms of the agreement, NASA will provide the mission's L band synthetic aperture radar (SAR), a high-rate telecommunication subsystem for scientific data, GPS receivers, a solid-state recorder, and a payload data subsystem. ISRO will provide the satellite bus, an S band synthetic aperture radar, the launch vehicle, and associated launch services.

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S139 burnout, L40 shutoff, GS2 ignition, GS1 separated, fairing separation.