Published on: November 17, 2025 3:26 PM SpaceX successfully launched the Sentinel-6B satellite aboard a Falcon 9 rocket from California, marking a major step forward in global efforts to track rising sea levels. The mission aims to deliver highly accurate measurements of the world’s oceans, which are essential for understanding the pace of climate change. Moreover, the launch strengthens international cooperation in climate science. The satellite is the twin of the Sentinel-6 Michael Freilich mission launched in 2020 and carries advanced cloud-penetrating radar to measure ocean height within about one inch. Operating at an orbit of nearly 830 miles, it will map 90% of Earth’s oceans. Additionally, it will deliver groundbreaking data on ocean currents, wave patterns, and long-term sea level rise. NASA officials highlighted the satellite’s importance for safety and planning across multiple sectors. They explained that the data supports navigation, search-and-rescue operations, commercial fishing, and global shipping routes. Furthermore, the measurements help create accurate flood forecasts that protect coastal infrastructure, property, and communities facing rising water levels. Read more : SpaceX launches secretive X-37B US military space drone Another key element of the mission is its strong international partnership. The project’s cost is shared equally between the United States and Europe, with major contributions from NASA, ESA, NOAA, and Eumetsat. This collaboration reflects a shared commitment to monitoring climate-driven ocean changes and improving global environmental resilience. The mission also marked a major milestone for SpaceX, representing the 500th flight of a previously flown Falcon 9 booster. The rocket’s first stage successfully returned to the launch site, completing its third mission. This achievement further demonstrates SpaceX’s continued progress in reusable launch technology.