In 2002, the following scholars visited our institute: P. Ambroz (Astronomical Institute, Ondrejov, Czech Republic), P. Bochnícek (Geophysical Institute, Prague, Czech Republic), A. V. Borovik (Baikal Astrophysical Observatory, Institute of Solar-Terrestrial Physics, Irkutsk, Russia), L. Buccheri (Istituto di Astrofisica Spaziale e Fisica Cosmica - Sezione di Palermo, CNR, Palermo, Italy), C. Castro (Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, USA), G. Eichhorn (Smithsonian Astrophysical Observatory, Cambridge, USA), E. Hiei (National Astronomical Observatory, Tokyo & Meisei University, Tokyo, Japan), V. R. Khalack (National Astronomical Observatory, Kiev, Ukraine), E. L. Martin (Institute for Astronomy, University of Hawaii, USA & Laboratoire d'Astrophysique, Observatoire de Grenoble, France) Z. Mikulášek (Institute of Theoretical Physics and Astrophysics, Masaryk University, Brno, Czech Republic), G. Pupillo (ISAC (FISBAT) CNR, Bologna, Italy), T. Sakurai (National Astronomical Observatory, Mitaka, Japan), S. Shugarov (Sternberg Astronomical Institute, Moscow State University, Moscow, Russia), S. Štefl (Astronomical Institute, Ondrejov, Czech Republic).