He is a theoretical physicist, retired professor from the University of Lisbon School of Sciences and a researcher at the Institute of Astrophysics and Space Sciences. He has always been interested in the theory of relativity and cosmology and the dissemination of Albert Einstein's work. The expansion and deceleration of the universe, the collision of black holes and gravitational waves were the subject of lectures and courses he gave at the Lisbon Astronomical Observatory, and to FCUL classes.