Professor of Astronomy, University of California, Berkeley

Professor of Astronomy, Institute of Astronomy, University of Cambridge, UK

Professor of Physics & Astronomy, University of Hawaii

Professor of Astrophysics, Lancaster University

Cavendish Laboratory - Kavli Institute for Cosmology, University of Cambridge

Professor of Astronomy & Astrophysics, Penn State University

Harvard-Smithsonian Center for Astrophysics

Professor, Cosmic Dawn Center, Niels Bohr Institute, Copenhagen University

Professor of Astronomy, Boston University

Senior Astrophysicist, Center for Astrophysics | Harvard & Smithsonian