Roberto A. Capuzzo-Dolcetta worked for 20 years as a full-time researcher at the University of Roma La Sapienza, until, in July 2000, he became Associate Professor in Astronomy and Astrophysics, where he is now teaching Fluid dynamics for Astrophysics and Theoretical Astrophysics. He has also a long term experience in teaching Gravitational Physics and Theoretical Mechanics at both undergraduate and graduate level. He has also been teaching in the United States, delivering, for instance, the undergraduate course on Extragalactic Astronomy and Cosmology at the University of Washington and Seattle and presenting lectures for graduate students at Boston University. Since May 2010 he has been a scientific reviewer for ISCRA (Italian Super Computing Research Allocation) at CINECA and leader of the panel of Universe Science of the Access Committee of PRACE (the european infrastructure for super computing). His research activity is mainly theoretical, in the field of stellar clusters, bothgalactic and extragalactic. He is an expert in sophisticated numerical methods to deal with large self-gravitating N-body systems. He has obtained important results concerning the evolution and dynamics of the globular cluster systems in galaxies, and proposed a new original explanation for mass accretion and activity of galactic nuclei. He is the author of more than 200 scientific papers in international journals.