World-renowned physicist Stephen Hawking has died at the age of 76. That what the family of Stephen Hawking announced in the early hours of Wednesday. He died peacefully at his home in Cambridge. In a statement, his three children said: "We are deeply saddened that our beloved father passed away today. He was a great scientist and an extraordinary man whose work and legacy will live on for many years. His courage and persistence with his brilliance and humor inspired people across the world. He once said, 'It would not be much of a universe if it wasn't home to the people you love.' We will miss him forever." The British scientist was famed for his work with black holes and relativity and wrote several popular science books including A Brief History of Time. Through his work with mathematician Sir Roger Penrose, he demonstrated that Einstein's general theory of relativity implies space and time would have a beginning in the Big Bang and