September 15, 2026

The Sentinel-3C and FLEX satellites lift off atop a Vega-C rocket (Photo: ESA–S. Corvaja. ESA Standard Licence)

A few hours ago, the Sentinel-3C, part of the GMES/Copernicus program, and the FLEX satellites were launched from the space center in French Guiana atop a Vega-C rocket. After approximately an hour, Sentinel-3C separated from the rocket’s final stage, the adapter known as Vespa. About 57 minutes later, FLEX also separated from Vespa. Their final orbit is sun-synchronous, meaning they will pass over a specific area of ​​Earth at the same local time, at an altitude of approximately 815 kilometers.