Universidad Complutense de Madrid

Heidelberg University

SPACE Institute, University of California, Los Angeles

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

Director, Centro de Astrofisica da Universidade do Porto

Dalhousie University

Professor Emeritus, RSAA, The Australian National University