Press Releases

HydroGNSS Satellites Proving In-Orbit Capabilities (16/03/2026)

SSTL press release presenting latest results from both HydroGNSS satellites.https://www.sstl.co.uk/media-hub/latest-news/2026/hydrognss-satellites-proving-in-orbit-capabilities

First Light Delay Doppler Maps (19/12/2025)

Press release on commissioning update shortly after launch. Payloads on both HydroGNSS satellites are collecting Delay Doppler Maps of GPS and Galileo reflected signals. https://www.sstl.co.uk/media-hub/latest-news/2025/hydrognss-commissioning-update

ESA's HydroGNSS Mission Launched (28/11/2025)

The European Space Agency’s first Scout mission, HydroGNSS, was launched today, 28 November, marking a significant step in advancing global understanding of water availability and the effects of climate change on Earth’s water cycle. The two twin HydroGNSS satellites were carried into orbit at 19:44 CET […]

Pre-Launch Press Briefing for HydroGNSS (03/11/2025)

Watch the replay of the HydroGNSS pre-launch media briefing, which took place on Monday 3 November at 09:00 GMT / 10:00 CET, ahead of the launch of the mission. https://www.esa.int/ESA_Multimedia/Videos/2025/11/HydroGNSS_pre-launch_media_briefing

HydroGNSS Twice as Good (06/03/2023)

HydroGNSS twice as good