was Eckart Marsch is a retired Senior Research Scientist (C3) at the Max-Planck-Institut für Sonnensystemforschung (MPS), retired Extraordinary Professor of Astronomy and Astrophysics at the University of Göttingen und retired Senior Research Scientist at the IEAP of the Christian-Albrechts-University at Kiel, 2012. He studied physics at the Universities of Karlsruhe, Berlin and Kiel. He was awarded Dipl.-Phys. (theoretical condensed matter physics), University of Kiel, 1973 Dr. rer. nat. (theoretical condensed matter physics), University of Kiel, 1976 Habilitation (astronomy and astrophysics), University of Göttingen, 1990 Call for full professorship (C4) for Extraterrestrial Physics at the University of Kiel, 1999 Fellow of the American Geophysical Union, 2009 Hannes Alfven Medal of the European Geosciences Union, 2018 He was research staff at the MPI für Extraterrestrische Physik, Garching, 1976-1980, research staff and senior scientist (C3) at the Max Planck-Institut für Aeronomie, Lindau, 1980-2004, and senior research scientist at the Max-Planck-Institut für Sonnensystemforschung, 2004-2012 Lecturer and Co-editor of eight books and of four international scientific journals (1991-2015) (en.wikipedia.org/wiki/Eckart_Marsch). Ulrich von Kusserow studied physics and mathematics at the Clausthal University of Technology and astrophysics at the Georg-August University in Göttingen. His Diploma thesis was on ""Stationary spherical α-ω-dynamos and the Earth's magnetic field"" He worked as a teacher of physics and mathematics and was chairman of the amateur astronomical Olbers Society e. V. Bremen. He worked at the Institute for Didactics of Physics at the University of Potsdam and was head of the advanced practical experiment ""Observation of the Magnetic Sun"" at the University of Bremen. He is a Lecturer and author (ulrich-von-kusserow.de)