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Lost Without Geodesy

What happens if geodesy disappears? Phones, planes, and warning systems would fail. Our cartoon “Lost Without Geodesy” shows how vital this invisible science is. Geodesy powers GNSS, enabling precise positioning, earthquake monitoring, sea level studies, and more. Without it, GNSS would drift and global systems would collapse.
AGU© AGU
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GGOS at #AGU25 – Call for Abstracts

Join GGOS at #AGU25 (15–19 Dec 2025, New Orleans) for Session G004 on geodesy’s role in Earth system monitoring. Share your research on geodetic techniques, climate applications, reference frames, and more. Help shape global collaboration in geoscience! Submit your abstract by 30 July 2025.
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Call for Abstracts: REFAG2026 – IAG Symposium on Reference Frames for Applications in Geosciences

The REFAG2026 symposium on reference frames in geosciences will take place in Munich from 2–4 March 2026, followed by the GGOS/IERS UAW. Abstract submissions are open until 15 October 2025. Join us in shaping the future of geodetic reference frames!
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First Geodesy Cartoon Released

We’re excited to share the first release in our new cartoon series about geodesy: The New Height of Qomolangma (Mt. Everest). This cartoon offers an engaging and educational look at the long-standing debate between China and Nepal over the…
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Welcome to the New IAG Website

We are excited to announce the official launch of the new IAG website geodesy.science. This launch marks a major milestone for the IAG and reflects our ambition to make geodesy more visible, accessible, and connected — both within the scientific…
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A new atomic clock in space could help us measure elevations on Earth

What if we could measure height differences on Earth to the centimeter from space? ESA’s ACES mission on the ISS links ultra-precise atomic clocks in orbit with those on Earth — enabling more accurate global elevation data. This could transform geodesy and help refine height reference systems worldwide.
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Virtual School of Geodesy – Reference Frames, Geodynamics, Atmosphere

Are you passionate about geodesy, climate change, and the global systems that help us understand our planet? Don’t miss this unique opportunity to dive deep into one of the most relevant scientific topics of our time! This international online…
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Look Back at the IAG Geodesy Reception 2025

We are pleased to report that the IAG Geodesy Reception at this year’s EGU General Assembly, held on Tuesday, April 29, 2025, was a great success! Hosted at the Federal Office of Metrology and Surveying (BEV) in Vienna, the event brought…
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New Paper Highlights the Power of Geodesy to Support Science and Society

The global geodetic community has come together to address one of the most pressing needs of our time: monitoring the dynamic Earth system. A new peer-reviewed article, “The Global Geodetic Observing System (GGOS) – Harnessing Geodesy for…
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New RAEGE Station in Gran Canaria: A Milestone for Global Geodesy

The Spanish Ministry of Transport and Sustainable Mobility (MTMS) has officially begun the construction of the third RAEGE station on a site granted by the Cabildo of Gran Canaria to the National Geographic Institute (IGN) in March 2023.…