Universidad Complutense de Madrid

Heidelberg University

Research Scientist, California Institute of Technology

Distinguished Professor, Swinburne University of Technology

Professor of Physics & Astronomy, University of Hawaii

Cavendish Laboratory - Kavli Institute for Cosmology, University of Cambridge

Associate Professor of Physics at Astronomy, University of Pittsburgh

Dalhousie University

Director, Centro de Astrofisica da Universidade do Porto

Professor Emeritus, RSAA, The Australian National University