Prof. Helen Mavromichalaki received a degree in Physics and a Ph.D. in Physics from the National and Kapodistrian University of Athens, Athens, Greece, in 1970 and 1977, respectively. She joined the Nuclear and Particle Physics Section of the Physics Department of Athens University, Athens, Greece, where she has served as Lecturer, Assistant Professor, and now as an Associate Professor. Since 1982, she has been the head of the Cosmic Ray Group and since 2000, she has been the Principal Investigator of the Athens Neutron Monitor station, providing high-resolution cosmic ray data to the Internet in real time. She is responsible for two projects supported by the European Commission: the development of the worldwide Neutron Monitor Network in real time in the Athens station and the forecasting of great proton events dangerous to satellite technology using this network. Her research interests include cosmic ray, solar, space, and magnetospheric physics useful to space weather applications.