Lucy, 47 and Tim, 38, were seen leaving Hawking’s house in the centre of Cambridge, near to where he worked at Gonville and Caius College. The pair, who have made regular visits to their dad over the years, were spotted leaving the home in a taxi.
Lucy, who wore a long grey coat, significantly helped care for her father as his motor neurone disease and saw his condition deteriorate. A journalist and novelist, she has a son William and co-wrote a series of children’s books with her father, with the first one titled George’s Secret Key to the Universe, published in 2007. Hawking’s eldest son, Robert, who lives in America, was not seen at the house.
Stephen, who was famous for his work with black holes and relativity, wrote several popular science books, including A Brief History of Time. He was diagnosed with a rare form of motor neurone disease at the age of 22 and given only a few years to live.
In a statement released today his 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."
A book of condolence has been opened at Gonville and Caius College where Professor Hawking was a fellow.