Sentinel-6B Encapsulation

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.