The ground breaking physicist Stephen Hawking has died at the age of 76.
He was known for his theories on black holes, relativity and the history of the universe.
In the 1960s he was given just a few years to live after being diagnosed with a rare form of motor neurone disease.
Hawking’s children, Lucy, Robert and Tim said in a statement: “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 humour 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 for ever.”
The scientist was also known for his great sense of humour. Here he is being interviewed by John Oliver in 2014.