Dennis W. Sciama

Dennis William Siahou Sciama, (; 18 November 1926 – 18/19 December 1999) was a British physicist. He was an important scientist for the development of British physics after the Second World War. 
He was the PhD supervisor to many famous cosmologists, including Stephen Hawking, Martin Rees and David Deutsch. He is seen as one of the fathers of modern cosmology.