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ESA Set to Launch HydroGNSS Satellites for Earth Science

11/7/2025

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Summary

Story summary

The European Space Agency (ESA) will launch HydroGNSS satellites from Vandenberg Space Force Base, California, this month.
Surrey Satellite Technology Limited (SSTL) developed twin satellites to use Global Navigation Satellite System (GNSS) reflectometry for soil moisture and permafrost data.
The HydroGNSS mission is part of ESA's Scout Programme, delivering innovative science quickly.
The satellites are ready for launch after successful integration and testing, improving understanding of Earth's water cycle.

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Story summary

The European Space Agency (ESA) will launch HydroGNSS satellites from Vandenberg Space Force Base, California, this month.
Surrey Satellite Technology Limited (SSTL) developed twin satellites to use Global Navigation Satellite System (GNSS) reflectometry for soil moisture and permafrost data.
The HydroGNSS mission is part of ESA's Scout Programme, delivering innovative science quickly.
The satellites are ready for launch after successful integration and testing, improving understanding of Earth's water cycle.