Solar-Terrestrial Sciences

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

NEOMI SEEP Study Team Dedong Wang, Huiting Feng, Miroslav Hanzelka, Kaori Nakashima, Benjamin Grison Edited by Mrittika Ghosh April 30, 2026

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 c ...[Read More]

Introducing Jana Šafránková and Zdeněk Němeček : 2026 Hannes Alfvén Medal for pioneering research in space plasma and dusty plasma Physics

Mrittika Ghosh and Liliana Macotela April 28, 2026

Congratulations on receiving the 2026 Hannes Alfvén Medal for your pioneering work and outstanding leadership in advancing our understanding of space plasma physics, including its fundamental processes and impacts throughout the solar system and beyond. What does this recognition mean to each of you personally, and how does it impact your ongoing work in this fascinating field? We are both very ho ...[Read More]

Don’t Miss the EGU-ST Early-Career Scientist Events during EGU26!

Ezgi Gülay March 30, 2026

ST-ECS picnic at Donaupark 2025

As the EGU General Assembly (GA) 2026 approaches, the Solar-Terrestrial (ST) Division Early-Career Scientist (ECS) team is organizing various events to give researchers a platform to network with their peers, and strengthen our community! What is ECS? Students (BSc, MSc), PhD candidates and researchers who obtained their highest academic degree in the last seven years are Early-Career Scientists a ...[Read More]

ST-ECS Networking Campfire: “How to Mentor”

Ezgi Gülay March 5, 2026

In academia, success is often measured with quantifiable outputs such as publications, grants, and awards. On the other hand, the challenging road leading to this success is not something discussed openly. The relationship we build with our colleagues, the support and guidance we receive from mentors and supervisors are important factors affecting our success as individuals and as a community. Me ...[Read More]

On the correlation and interactions of space weather with biological indicators

Luiz Felipe C. Rezende, Eurico R. De Paula, Marcio T. A. H. Muella, Reinaldo R. Rosa, Paulo H. N. Saldiva, Severino L. G. Dutra, & Jean P. H. B. Ometto., Edited by Shreedevi P. R. March 2, 2026

Figure: Diagram of the effects of solar wind and its interaction with geophysical factors on the human body.

1. Introduction Space weather is significantly affected by geomagnetic disturbances (GMDs) that occur during or after intense solar events such as coronal mass ejections (CMEs), which expel substantial amounts of electromagnetic particles into interplanetary space. Most of these particles collide with the magnetosphere (the outermost region of the atmosphere) where the solar wind (continuous flow ...[Read More]

Probing the Solar Wind with Spacecraft Radio Occultation Signals: Chasing a Unified Method to Probe the Sun

Authored by Keshav Aggarwal & Raj Kumar Choudhary., Edited by Shreedevi P. R. February 1, 2026

Figure: Radio occultation (RO) uses spacecraft signals passing behind the Sun or a planet to probe the intervening plasma or atmosphere. Refraction, scattering, and delays in the signal reveal properties such as electron density and solar wind velocity.

Introduction The solar wind, a continuous outflow of charged particles from the solar corona, plays a fundamental role in shaping the heliosphere and driving space weather. Its interaction with planetary magnetospheres and atmospheres regulates magnetospheric dynamics, influences atmospheric escape, and governs space weather hazards that can affect both space- and ground-based technologies. Despit ...[Read More]

Behind the Poster: Extending the Wave Telescope – An Interview with EGU 2024 Outstanding Student Paper Presentation (OSPP) Award Winner Leonard Schulz

Shreedevi P R January 29, 2026

Leonard Schulz receiving the Outstanding Student Paper Presentation (OSPP) Award certificate from ST Division President Dr. Alexis P. Rouillard during the EGU General Assembly, Vienna, April 2025.

1. Congratulations on your OSPP Award 2024! What was your initial reaction to winning, and how has it helped your career as an early-career scientist? I was very delighted and also proud that my work is recognized in this way. I also understood in hindsight why I had little time to breathe during my poster presentation slot; some of the people asking a lot of the questions will have been the judge ...[Read More]

A talk with scientists across Europe: building the future of European heliophysics together

Guram November 23, 2025

“Heliophysics studies the Sun, its sphere of influence, and how it affects the bodies in the solar system.” – this holistic approach to understanding our space environment is at the heart of the European Heliophysics Community (EHC), an open and inclusive network of researchers across Europe (https://www.heliophysics.eu/). The EHC promotes collaborative, curiosity-driven science that explore ...[Read More]

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

Shreedevi P. R. September 30, 2025

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-Te ...[Read More]

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

Guram August 14, 2025

Richard Horne enjoys writing as it helps to clarify ideas — research is a creative activity. (Credit: Natural Environment Research Council / British Antarctic Survey)

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 ...[Read More]