Phillip Hargrove, a NASA launch trajectory analyst with the agency’s Launch Services Program, left, and NASA Launch Commentator Joshua Santora participate in the launch broadcast for the Sentinel-6 Michael Freilich mission on Nov. 21, 2020, in the Press Site auditorium at Kennedy Space Center in Florida. The SpaceX Falcon 9 rocket carrying the Sentinel-6 Michael Freilich spacecraft launched from Space Launch Complex 4 at Vandenberg Air Force Base in California at 9:17 a.m. PST (12:17 p.m. EST). The Sentinel-6/Jason-CS (Continuity of Service) mission consists of the Sentinel-6 Michael Freilich satellite, which will be followed by its twin, the Sentinel-6B satellite, in 2025. The Sentinel-6/Jason-CS mission is part of Copernicus, the European Union’s Earth observation program, managed by the European Commission. Continuing the legacy of the Jason series missions, Sentinel-6/Jason-CS will extend the records of sea level into their fourth decade, collecting accurate measurements of sea surface height for more than 90% of the world’s seas, and providing crucial information for operational oceanography, marine meteorology, and climate studies. NASA’s Launch Services Program at Kennedy Space Center was responsible for launch management.