Celebrities, scientists, public figures react to Stephen Hawking's death on Twitter

Physicist Stephen Hawking has died at the age of 76, a family spokesperson said, according to BBC News.The family released a statement saying Hawking died peacefully at his home in Cambridge, England, in the early hours of Wednesday morning."We are deeply saddened that our beloved father passed away today," Hawking's three children said in a statement. "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 brilli