Laurea in Fisica, University Rome, 1965. Doctor of Philosophy in Astronomy, University California, Berkeley, 1973.
Research fellow, National Research Council/LNF, Frascati, Italy, 1965-1967; research assistant, University of California, 1967-1973; assistant research astronomer, University of California, 1973-1981; associate research astronomer, University of California, 1981-1983; senior astronomer, Space Telescope Science Institute and European Space Agency, Baltimore, 1983-1995; senior astronomer, European Southern Observatory, Munich, since 1995.
Member International Astronomical Union, American Astronomical Society, American Geophysical Union.
Married Dialta Malvezzi-Campeggi, March 5, 1966. Children: Donata, Ilaria, Camilla.