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Sky high (Credit: Taro Nakai, distributed via imaggeo.egu.eu)

ST Solar-Terrestrial Sciences Division on Solar-Terrestrial Sciences

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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

Behind the Poster: An Interview with EGU 2025 Outstanding Student Paper Presentation (OSPP) Award Winner Carlos Castillo-Rivera

Congratulations on receiving the OSPP Award 2025! What was your reaction when you found out you had been selected for the award? I was very surprised when I received the email, and I read it several times to make sure it was real. After that, I felt extremely proud of my work because I could see the evaluation scores, comments, and recommendations from the judges. Their feedback confirmed that my research, the design of my poster, and the overall quality …


My First EGU Experience: EGU26

The journey to my first EGU General Assembly (GA) 2026 (EGU26) was memorable even before the conference began. What should have been a straightforward train ride to Vienna turned into an unexpected adventure when we were asked to get off at a small station and wait several hours for alternative transport. Surrounded by travellers, luggage, and a fair amount of confusion, it felt as though the EGU26 adventure had already begun before we had even reached Vienna. Fortunately, we eventually …


Meet Samuel Badman, the 2026 Outstanding Early Career Scientist Awardee of the Solar-Terrestrial Division!

Congratulations on receiving the EGU 2026 ST Division Outstanding Early Career Scientist Award for your outstanding contributions to our understanding of solar wind physics through observations from the Parker Solar Probe and Solar Orbiter. What does this recognition mean to you personally, and how does it impact your work in this fascinating field? It is an incredible recognition which I am extremely grateful for, both to my nominators and the EGU-ST selection committee, and to all of my incredible colleagues, …


What do we need to understand the impact of energetic particle precipitation on the atmosphere? Your response can shape a future satellite mission!

Are you working on the magnetosphere, ionosphere, atmosphere, or space weather? We invite members of the scientific, operational, and applied user communities to contribute to a community survey that will help shape a New Earth Observation Mission Idea (NEOMI) Study of Energetic Particle Precipitation (SEEP). Earth’s atmosphere is not isolated from space. Invisible streams of energetic particles constantly connect the near-Earth space environment with our atmosphere, influencing atmospheric chemistry, ozone and NOx, atmospheric dynamics, and even aspects of space weather. …

Recent awardees

Jana Šafránková

Jana Šafránková

  • 2026
  • Hannes Alfvén Medal

The 2026 Hannes Alfvén Medal is awarded to Jana Šafránková for pioneering research in space plasma and dusty plasma physics, including establishing a unique laboratory facility for dust measurements and mentoring a new generation of scientific leaders.


Zdeněk Němeček

Zdeněk Němeček

  • 2026
  • Hannes Alfvén Medal

The 2026 Hannes Alfvén Medal is awarded to Zdeněk Němeček for pioneering research in space plasma and dusty plasma physics, including establishing a unique laboratory facility for dust measurements and mentoring a new generation of scientific leaders.


Samuel Badman

Samuel Badman

  • 2026
  • Division Outstanding Early Career Scientist Award

The 2026 Division Outstanding Early Career Scientist Award is awarded to Samuel Badman for outstanding research on the physics of the solar wind measured by the Parker Solar Probe and Solar Orbiter.


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.


Carlos Castillo-Rivera

Carlos Castillo-Rivera

  • 2025
  • Outstanding Student and PhD candidate Presentation (OSPP) Award

The 2025 Outstanding Student and PhD candidate Presentation (OSPP) Award is awarded to Carlos Castillo-Rivera Evaluation of Interhemispheric Asymmetry using Total Electron Content at High Latitudes During Geomagnetic Storms


Qianyi Ma

Qianyi Ma

  • 2025
  • Outstanding Student and PhD candidate Presentation (OSPP) Award

The 2025 Outstanding Student and PhD candidate Presentation (OSPP) Award is awarded to Qianyi Ma Multi-spacecraft Observations of Interplanetary Suprathermal Electrons in a Shock-ICME Interaction Region

Current issue of the EGU newsletter

In our July issue, we are looking back on 50 years of Martian photography, learn more about science communication with twice the Simon Clark, don't miss your chance to apply for the Science for Policy Pairing Scheme. Also applications are open to volunteer with the EDI Committee or the Art-Science Working Group, the call for sessions for EGU27 is open and don't miss your chance to nominate someone to e the Union's next Early Career Scientist (ECS) Union-wide Representative or Treasurer!

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