British scientist Stephen Hawking passes away at his home in Cambridge, his family said today. He was 76. The British theoretical physicist is known for his groundbreaking work with black holes and relativity. He was author of several popular science books including ‘A Brief History of Time’ , which has sold more than 10 million copies. His life story was the subject of the 2014 film ‘The Theory of Everything’, starring Eddie Redmayne.