Colombia will host the International Astronomical Union's 400th Symposium on Solar and Stellar Activity
The city of Medellín is preparing to become a global center for astrophysical research by hosting the International Astronomical Union Symposium 400 (IAUS400) , entitled Solar and Stellar Activity at Multiple Scales , from July 21 to 25.
This event will bring together leading scientists, researchers in training, and students from around the world to explore the dynamic processes that govern our Sun and other stars . The symposium represents a significant milestone in international efforts to understand magnetic activity, energy transport, and eruptive phenomena at a wide range of scales, as well as their influence on planetary environments and habitability.
IAUS400 will showcase cutting-edge advances in high-resolution observations, numerical simulations, and theoretical modeling, along with the growing role of artificial intelligence and machine learning in solar and stellar research .
One of the symposium's central objectives is to strengthen integration between the solar and stellar communities through comparative studies and interdisciplinary dialogue.
Hosted in Medellín, a city renowned for its innovation, culture, and commitment to science and education, IAUS400 reflects Colombia's growing presence on the global scientific landscape.
The program includes keynote addresses, scientific sessions, poster presentations, public outreach activities, and special panels on the future of astrophysics.
Coronal loops of the sun in 2012. Photo: NASA/Solar Dynamics Observatory
This event is made possible thanks to the support of the International Astronomical Union, as well as various institutional partners and the DynaSun project, an initiative funded by the European Union's Horizon Europe program, which seeks to strengthen international collaboration in solar and heliospheric research .
"We are very excited to host IAUS400 in Medellín," said Dr. Santiago Vargas Domínguez, president of the Local Organizing Committee. "This symposium represents a unique opportunity to learn, connect, and advance our understanding of stars—including our own Sun—through global collaboration and innovation."
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