We are waking up to the sad news today that Stephen Hawking has died peacefully at his home in Cambridge.
He was 76years old. A statement from his children read "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."
He was a world renowned scientist with a world class sense of humour.
We've chosen just a few of his brilliant comedy cameos for you to remember him by.
He said appearing on The Simpsons was one of his proudest moments.