Hawking suffered from Lou Gehrig’s disease, and spent much of his adult life in a wheelchair and using voice synthesiser to talk.
He died this morning (14 March), co-incidentally on Pi Day and Albert Einstein’s birthday.
Hawking, born on 8 January 1942 in the UK, was also a cosmologist, astronomer, mathematician and author of numerous books.
He was married twice, and had three children.