ESA Launches HydroGNSS Mission to Scout for Water Resources

The European Space Agency (ESA) has launched its first Scout mission, HydroGNSS, on November 28, 2025, marking a significant advancement in understanding global water availability and the impact of climate change on Earth’s water cycle. Two twin satellites were sent into orbit at 19:44 CET aboard a SpaceX Falcon 9 rocket, as part of the Transporter-15 rideshare flight from Vandenberg Space Force Base. This mission will precisely map soil moisture, vegetation biomass, and snow and ice conditions by observing reflected GNSS (Global Navigation Satellite System) signals from Earth’s surface. The data gathered is expected to enable more accurate predictions and responses to water scarcity and flood events.

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