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George Ellis, FRS, is Professor Emeritus at the University of Cape Town, South Africa. He is co-author with Stephen Hawking of The Large Scale Structure of Space-Time. Roy Maartens holds an SKA Research Chair at the University of the Western Cape, South Africa, and is Professor of Cosmology at the University of Portsmouth, UK. Malcolm MacCallum is Director of the Heilbronn Institute at the University of Bristol and is President of the International Society on General Relativity and Gravitation. |
