Marco Fulle is a Senior Researcher at INAF-Trieste, where he has worked as an astronomer since 1988. His PhD thesis in Physics at Genova University, in July 1982, discussed the determination of density fields above growing crystals from holographic interferometry in the framework of constrained inversions of ill-posed problems. From 1985 to 1988, he was a visiting scientist at the International School for Advanced Studies, Trieste, where he started to work on the physics of comets. Since then, he has contributed to studies of ion, dust and atomic neutral tails; trails and meteoroid streams; bound clouds of debris around comets; structure and composition of cometary dust; origin of comets and links with models of protoplanetary disks; thermophysical models and structural models of the nucleus of comets; and elemental abundances. He has been an Interdisciplinary Scientist for the ESA-Rosetta Mission to short-period comet 67P/Churyumov-Gerasimenko from 1996 to 2020. He has published more than 250 refereed papers devoted to comets.