A special role in the study of general relativity and cosmology has been played by the influential research groups led by Dennis Sciama. In April 1992 many of his ex-students and collaborators assembled to review the developments that have taken place during his career to date. The topics covered include fundamental questions in general relativity and cosmology, black holes, active galactic nuclei, galactic structure, dark matter and large scale structure.
George Francis Rayner Ellis, FRS, Hon. FRSSAf, is the Emeritus Distinguished Professor of Complex Systems in the Department of Mathematics and Applied Mathematics at the University of Cape Town in South Africa.
He is considered one of the world's leading theorists in cosmology. He is an active Quaker and in 2004 he won the Templeton Prize. On 18 May 2007, he was elected a Fellow of the British Royal Society.
From 1989 to 1992 he served as President of the International Society on General Relativity and Gravitation. He is a past President of the International Society for Science and Religion. He is an A-rated researcher with the NRF.