Vega-C Set to Launch FLEX, Sentinel-3C
Europe's Vega-C rocket carries the FLEX and Sentinel-3C satellites from French Guiana's spaceport.
Updated on Nov. 4, 2026 in Space
A Vega-C launcher is scheduled to carry the FLEX and Sentinel-3C satellites from Europe's Spaceport in French Guiana on September 15, 2026, at 03:21 CEST (22:21 local time). The satellites are encapsulated in the launcher's nose cone while awaiting liftoff.
Why it matters
FLEX will monitor the health of Earth's vegetation, while Sentinel-3C joins two Sentinel-3 satellites already in orbit to monitor oceans, land, ice and the atmosphere for the Copernicus program.
The launch is scheduled for 03:21 CEST, with Sentinel-3C the third satellite of the Copernicus Sentinel-3 series alongside two already in orbit. Whether the launch proceeded on time is not covered in the extraction.
The players
European Space Agency (ESA)
ESA is the European intergovernmental agency that develops and operates Earth observation and space missions, including the FLEX satellite.
Copernicus Programme
Copernicus is the European Union's Earth observation program that uses Sentinel satellites to monitor land, ocean, ice and atmosphere.
The details
The Vega-C will deploy Sentinel-3C first, followed by FLEX after launcher manoeuvres. FLEX, ESA's Fluorescence Explorer, is fitted inside the Vespa+R payload adapter.
Timeline
September 15, 2026, 03:21 CEST (September 14, 22:21 local time): scheduled Vega-C launch of FLEX and Sentinel-3C.
Seasonal Patterns
The Sentinel-3C launch extends the Copernicus Sentinel-3 series, which already has two satellites in orbit monitoring ocean, land, ice and atmosphere. FLEX adds a dedicated tool for tracking vegetation health alongside that existing monitoring network.
FLEX will provide data on the health of Earth's vegetation, which can inform agriculture and ecosystem monitoring. Sentinel-3C adds ocean, land, ice and atmosphere observations used in weather and climate tracking.
The takeaway
Earth observation satellites like FLEX and Sentinel-3C provide continuous data that helps track environmental change across the planet. Their measurements are most valuable when sustained over time, which is why additional satellites join existing missions.
Further reading
Explore more on Space coverage for context on Earth observation missions.
