1942- . English physicist, who has researched black holes and gravitational field theory. His books include A Brief History of Time 1988. Professor of gravitational physics at Cambridge from 1977, he discovered that the strong gravitational field around a black hole can radiate particles of matter. Commenting on Einstein's remark, `God does not play dice with the universe,' Hawking said: `God not only plays dice, he throws them where they can't be seen.' Confined to a wheelchair because of a muscular disease, he performs complex mathematical calculations entirely in his head.