Sentinel-1D fully assembled in the launch tower

With liftoff set for 4 November 2025 at 22:02 CET (18:02 local time), the Sentinel-1D upper-composite is now fully assembled on top of Ariane 6 in the launch tower at Europe’s Spaceport in French Guiana.

Once in orbit together with its sibling Sentinel-1C, Sentinel-1D will significantly enhance the capabilities of the Copernicus Earth observation programme.

The Sentinel-1 mission will continue to deliver radar images of Earth’s surface, performing in all weathers, day-and-night, providing a service vital for users who depend on frequent updates of critical data, such as disaster response teams, environmental agencies, maritime authorities and climate scientists.