British theoretical physicist Stephen Hawking has died at the age of 76, the Press Association reported, citing a spokesman for his family.
Hawking - who lived with motor neurone disease since his 20s, leaving him in a wheelchair and using a computer to speak and write - was a former professor of mathematics at the University of Cambridge and author of international best-seller A Brief History of Time.
He was diagnosed with motor neurone disease in 1963 and told he had two years to live.
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