The Hellenic Astronomical Society (Hel.A.S.), in collaboration with the Department of Physics of the National and Kapodistrian University of Athens (NKUA), under the initiative to offer knowledge and scientific training to the younger members, graduate students and young postdoctoral researchers of the Society, is organizing the 6th Summer School on "Multi-messenger Astronomy".

The main topics to be addressed are:
- Gravitational waves
- Cosmic rays at low and ultra high energies
- Astrophysical neutrinos
- Gamma-rays and X-rays
- Machine learning and deep learning applications
Confirmed lecturers (alphabetical order):
- Sara Buson (University of Wurzburg/DESY Zeuthen, Germany)
- Matteo Cerruti (APC University Paris Cite, France)
- Maria Gerontidou (National and Kapodistrian University of Athens, Greece)
- Nikolaos Karnesis (Aristotle University of Thessaloniki, Greece)
- Foteini Oikonomou (Norwegian University of Science and Technology, Norway)
- Maria Petropoulou (National and Kapodistrian University of Athens, Greece)
- Niharika Sravan (Drexel University, USA)
- Katerina Tzamarioudaki (NCSR Demokritos, Greece)
- Georgios Vasilopoulos (National and Kapodistrian University of Athens, Greece)