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IAG Early Career Scientists ECS Networking

Open Call for Early Career Researchers – EPOS-GNSS TCS Participation in EPOS Days 2026

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The GNSS Data & Products Thematic Core Service (EPOS-GNSS TCS) will support the participation of two Early Career Researchers (ECRs) in the ECR session at EPOS Days 2026 (16–20 March 2026, Cagliari, Italy). Selected ECRs will give a flash presentation and a poster, with travel support provided according to EPOS rules. Eligible applicants must be PhD students or have obtained their PhD within the last 7 years, actively use EPOS-GNSS data or products, and be able to attend the event. Applications (single PDF) including abstract, motivation, and a recommendation letter must be submitted by 5 December 2025 to

New IAG Publications | Geodesist’s Handbook 2024 & IAG Travaux 2023–2025

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The IAG has released two flagship open-access references: the Geodesist’s Handbook 2024 and the IAG Travaux Report 2023–2025. The Handbook presents IAG statutes, structure, officers, and planned scientific activities, while the Travaux documents scientific and organizational progress across all IAG components. Both volumes provide DOIs for the full work and for each chapter, supporting precise citation and strengthening the international visibility of IAG activities.

Call for Abstracts – EGU26 Session G2.2 “New Technologies for GGOS”

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The Global Geodetic Observing System (GGOS) invites contributions to Session G2.2 “New Technologies for the Global Geodetic Observing System (GGOS)” at the EGU General Assembly 2026 in Vienna. This session will highlight innovations and advances in geodetic observing systems for monitoring Earth’s geometry, gravity, and rotation. Topics include emerging technologies such as relativistic geodesy, quantum sensors, next-generation laser systems, LEO-based positioning, navigation and timing (PNT), and other forward-looking geodetic techniques. The session also welcomes contributions on general GGOS developments, new observatory concepts, and strategies to enhance the global geodetic infrastructure. Join us in shaping the future of geodesy and exploring how cutting-edge technology can strengthen GGOS’s role in observing and understanding our dynamic planet. Abstract Deadline: 15 January 2026, 13:00 CET

GGOS Days 2025 | Report

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The GGOS Days 2025 took place on 3–5 September within the IAG2025 Scientific Assembly in Rimini, Italy. The event featured five symposia and a highlight session on global geodetic infrastructure, standardization, regional collaboration, AI, space weather, and geohazards. Sessions on Geodesy for Society emphasized data management, policy engagement, and communication, highlighting geodesy’s role in sustainable development. The GGOS Governing Board and Science Panel met in hybrid format to review the implementation plan, update outreach materials, and coordinate capacity-building efforts. Read the full report for details.
VLBI GNSS Onsala Sweden

The Visibility Challenge of Geodesy

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Geodesy quietly underpins our modern world - from GNSS navigation to climate monitoring and digital twins. The new article “The Visibility Challenge of Geodesy” in the GIM International Magazine (Issue 4 2025) explores the global infrastructure behind geodesy and highlights initiatives to make it more visible and accessible to surveyors, geomatics professionals, and the wider geospatial community.
GGOS IberAtlantic School 2025

Highlights from 1st GGOS IberAtlantic Summer School

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The Yebes Observatory hosted GGOS IberAtlantic’s inaugural Summer School on space geodesy for early-career researchers from Spain and Portugal. Over five days, participants explored GNSS, VLBI, SLR, and gravimetry through theoretical and hands-on sessions, while cultural activities fostered collaboration. The event successfully strengthened geodetic skills, inspired scientific vocations, and built networks across the Ibero-Atlantic region.
Geodesy Cartoon Competition

Geodesy Cartoon Competition

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Join the Geodesy Cartoon Competition and turn complex science into creative, engaging visuals. Whether you're a scientist or an artist, this is your chance to make geodesy fun and accessible. Win up to 900€, gain international visibility, and help others understand why geodesy matters. Open to all!

Satellite Laser Ranging – How SLR Powers Geodesy

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Discover Satellite Laser Ranging (SLR) – lasers from ground stations measure satellite and Moon positions with millimeter precision. SLR supports the Terrestrial Reference Frame, tracks Earth rotation, tectonic motion, improves gravity and sea level models, and tests relativity. Explore the science behind these precision measurements in our Geodesy Cartoon.
Africa Workshop

South African National Geodesy Workshop

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South Africa, with a rich geodetic history, faces fragmented efforts. A National Geodesy Workshop aims to unite stakeholders, enhance coordination, and align with the UN's GGRF agenda—establishing a National Geodesy Working Group to support national development and global collaboration in geodesy.
Funding Money coins

Call for IAG proposals – IUGG Support Program of Scientific Meetings in 2026

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The IUGG invites proposals for support of selected scientific meetings in 2026, including workshops, schools, and symposia. Submissions via IAG must be sent by 10 September 2025 to IAG-Office. Meetings should be scientifically relevant, internationally oriented, inclusive, and multi-disciplinary.