The first of two identical satellites, Sentinel-6 Michael Freilich launched into orbit on Nov. 21, 2020, and the second (Sentinel-6B) is planned for 2025: https://go.nasa.gov/458QIXl #NASAEarth
Designed to measure the height of the ocean - a key component to understanding how Earth's climate is changing - Sentinel-6/Michael Freilich consists of two identical satellites that will be launched five years apart.
