Skip to main content
Sky high (Credit: Taro Nakai, distributed via imaggeo.egu.eu)

ST Solar-Terrestrial Sciences Division on Solar-Terrestrial Sciences

EGU logo

European Geosciences Union

Division on Solar-Terrestrial Sciences
st.egu.eu

Division on Solar-Terrestrial Sciences

President: Alexis Rouillard (Emailst@egu.eu)
Deputy President: Emilia Kilpua (Email)
ECS Representative: Andreas Wagner (Emailecs-st@egu.eu)

The Division on Solar-Terrestrial Sciences (ST) considers all aspects of solar and heliospheric physics, specifically the solar-terrestrial connection. It covers the physical processes occurring on the Sun, in the solar wind, as well as in Earth's magnetosphere and ionosphere. Solar activity (e.g. coronal mass ejections, solar flares, solar energetic particle events) and the response of the near-Earth space environment to these solar phenomena are studied on a wide-range of temporal and spatial scales. Data analysis and interpretation of space-borne and ground-based data, as well as theoretical studies and different modelling techniques are used to better our understanding of how our local star defines the neighbourhood that we live in.

Latest posts from the ST blog

ST-ECS Networking Campfire: “How to Navigate Between Academia and Industry”

For many early-career scientists, one of the big questions is whether to pursue a career in academia, move into industry, or find a path that bridges both worlds. Each sector offers unique opportunities and challenges, and learning how to navigate between them can help you make confident, informed career decisions. To shed light on this topic, the Early Career Scientists (ECS) team of the Solar-Terrestrial (ST) division of the European Geosciences Union (EGU) is organizing a Campfire Event featuring Dr. …


Meet Richard Horne, 2025 Julius Bartels medalist, honoured for his fundamental contributions to understanding the formation of the radiation belts and their effects on space weather

Congratulations on receiving the 2025 Julius Bartels Medal for your groundbreaking contributions to wave-particle interactions, their role in accelerating charged particles, and advancing the understanding of the formation of the radiation belts and their space weather effects. What does this recognition mean to you personally, and how does it impact your work in this fascinating field? I am truly honoured to receive the Julius Bartels Medal, and I am very grateful for this recognition. This award represents recognition of my …


Chasing Auroras 41 Millennia Ago with Agnit Mukhopadhyay and Sanja Panovska

Approximately 41,000 years ago, during the Laschamps geomagnetic excursion, Earth’s magnetic field experienced a significant disturbance. The strength of the magnetic field decreased to only 10% of what it is today, the magnetic poles shifted considerably from the geographic poles, and the magnetosphere—the protective layer surrounding our planet—became smaller and distorted in previously unvisualized ways. For the first time, a recent study by Agnit Mukhopadhyay, Sanja Panovska, and colleagues (2025) has reconstructed the global space environment during this period, revealing …


A Week to Remember: My EGU 2025 Experience

Vienna transformed into a buzzing hub of scientific exchange as the European Geosciences Union (EGU) General Assembly (GA) 2025 took place from 27 April to 2 May. Over 20,000 scientists from 120 countries gathered to share groundbreaking research across the Earth, planetary, and space sciences. Attending the GA for the first time as part of the Early Career Scientists (ECS) Team of the Solar-Terrestrial Sciences (ST) Division was inspiring and eye-opening. Here are some of my impressions from this exciting …

Recent awardees

Richard Horne

Richard Horne

  • 2025
  • Julius Bartels Medal

The 2025 Julius Bartels Medal is awarded to Richard Horne for outstanding work on understanding the acceleration and transport processes of charged particles in the inner magnetosphere, the formation of the radiation belts and their space weather effects.


Karin Dissauer

Karin Dissauer

  • 2025
  • Division Outstanding Early Career Scientist Award

The 2025 Division Outstanding Early Career Scientist Award is awarded to Karin Dissauer for outstanding research in solar and extra-solar space weather research.


Sandra Catherine Chapman

Sandra Catherine Chapman

  • 2024
  • Hannes Alfvén Medal

The 2024 Hannes Alfvén Medal is awarded to Sandra Catherine Chapman for her pioneering work and leadership in advancing our understanding of space plasma physics in the solar system and beyond.


Erika Palmerio

Erika Palmerio

  • 2024
  • Division Outstanding Early Career Scientist Award

The 2024 Division Outstanding Early Career Scientist Award is awarded to Erika Palmerio for outstanding research in analysing complex solar transients and their space weather effects.


Leonard Schulz

Leonard Schulz

  • 2024
  • Outstanding Student and PhD candidate Presentation (OSPP) Award

The 2024 Outstanding Student and PhD candidate Presentation (OSPP) Award is awarded to Leonard Schulz Capabilities of the wave telescope for multi-scale spacecraft configurations using a Vlasiator simulation

Current issue of the EGU newsletter

In our September Issue we look back at 65 years of the OPEC nations and how the legacy of petroleum can be used to move us to a sustainable future, learn more about activities you can do for this years' Earth Science Week in October, watch our new video on managing vulnerabilities whilst on fieldwork, apply for the EGU26 Artists in Residence programme by 27 October and if you know a work-student in Germany, why not suggest they apply for our new vacancy as a Community Development Assistant! 

All this and much more, in this month's Loupe!