Stephen Hawking was an amazing man. English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge.
Tell me more about Stephen Hawking 
He did some good work with Roger Penrose  on gravitational singularity theorems and also and the theoretical prediction that black holes emit radiation
Wow he did great work
This amazing scientist  Hawking was the first to set out a theory of cosmology
Really he was? Heard of the theory called cosmology
Hawking was the first to set out a theory of cosmology explained by a union of the general theory of relativity and quantum mechanics. He was a vigorous supporter of the many-worlds interpretation of quantum mechanics.
Hawking achieved commercial success with several works of popular science in which he discusses his own theories and cosmology in general. His book "A Brief History of Time" appeared on the British "Sunday Times" best-seller list for a record-breaking 237 weeks. Hawking was a Fellow of the Royal Society
Stephen Hawking
Stephen William Hawking (8 January 1942 – 14 March 2018) was an English theoretical physicist, cosmologist, and author who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge at the time of his death. He was the Lucasian Professor of Mathematics at the University of Cambridge between 1979 and 2009.
His scientific works included a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity and the theoretical prediction that black holes emit radiation, often called Hawking radiation.