Athens (Greece) – February 25-26, 2021

Completed February 26, 2021. In cooperation with the Philekpaideftiki Etaireia, the National Astronomical Committee, the Hellenic Astronomical Society, the Institute for Astronomy Astrophysics, Space Applications and Remote Sensing of the National of Observatory of Athens, and the Institute of Astrophysics of the Foundation for Research and Technology – Hellas.