ESA's HydroGNSS Mission Enters Full Science Phase, Releasing Data on Earth's Water Cycle

The European Space Agency's HydroGNSS Scout mission has completed its eight-month commissioning phase and is now in full scientific operations, publishing data to enhance understanding of Earth's water cycle. The mission, launched in November 2025, uses Global Navigation Satellite System Reflectometry (GNSS-R) to observe key hydrological variables from space.