Sentinel-6B, an Earth-observing satellite jointly developed by NASA and U.S. and European partners, will observe the ocean and measure sea level rise to provide insights into our home planet that will improve weather forecasts and flood predictions, safeguard public safety, and protect coastal infrastructure.
It launched at 9:21 p.m. PST, Sunday, Nov. 16 (12:21 a.m. EST, Monday, Nov. 17) from Vandenberg Space Force Base in California, joining its twin satellite, Sentinel-6 Michael Freilich, which launched five years earlier.

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