Back to Missions

HydroGNSS

HydroGNSS is the first ESA Scout mission, using Global Navigation Satellite System reflectometry from two satellites to measure soil moisture, freeze-thaw state over permafrost, inundation and wetlands, and above-ground biomass.

Follow this mission

Schedule, status, and mission updates. Time-based alerts will start when a time is available.

Identity

Aliases
HydroGNSS MissionHydroGNSS Scout Mission
Name
HydroGNSS
Status
active

Details

Astronauts
-
Description
HydroGNSS is the first ESA Scout mission, using Global Navigation Satellite System reflectometry from two satellites to measure soil moisture, freeze-thaw state over permafrost, inundation and wetlands, and above-ground biomass.
Destination
Near-polar, Sun-synchronous low-Earth orbit at approximately 550 km (two satellites 180° apart)
Programs
Start Date
2025-11-28
Vehicle Families
-

Links

Assets & Meta

Creation Time
August 13, 2026 at 17:19:19 UTC
Updated Time
August 21, 2026 at 00:25:54 UTC

Other

Affiliations
-
Space Stations
-
Vehicles
-
HydroGNSS - AeroVia