The Nobel prize in Physics 2020 has been awarded to three scientists who, in very different ways, have devoted their career to the study of black holes. Half of the Prize has been awarded to Sir Roger Penrose, Professor at University of Oxford, and the other half was shared by Reinhard Genzel - Director at Max Planck Institute for Extraterrestrial Physics, Garching, and Professor at University of California, Berkeley, USA - and Andrea Ghez Professor at University of California, Los Angeles, USA. Penrose, in a 3-pages paper that is still regarded as the main contribution to Einstein’s Theory of General Relativity, showed that the formation of black holes is not only a robust prediction of such a theory, but is also unavoidable. Andrea Ghez and Reinhard Genzel and their respective groups (independently) monitored the Galactic Center for three decades, finally confirming that the behaviour of stars in that region can only be explained if a super-massive black hole sits at the very center of our Galaxy, in the spot where a relatively faint radio source - Sgr A* - can be seen in the radio maps. I will briefly summarise the results motivating the award of the Nobel prize, in the hope to stir some discussion around a very hot topic, which might attract yet more prizes in the future.