In November 2020, the Copernicus Sentinel-6 Michael Freilich satellite was launched into orbit from the Vandenberg Air Force Base in California, US. Now, months later, the satellite has successfully passed what is known as the ‘in-orbit verification phase,” where its equipment is switched on and the instruments’ performance is checked.
Source:
https://phys.org/news/2021-02-sentinel-in-orbit.html