The first stage of a SpaceX Falcon 9 rocket lands at Vandenberg Space Force Base’s Landing Zone 4 in California on Sunday, Nov. 16, 2025, following the launch of the international Sentinel-6B spacecraft lifting off from Vandenberg’s Space Launch Complex 4 East. 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.