Stephen Hawking has died peacefully at 76 in the early hours at his home in the British university city of Cambridge.
Hawking has explained life's most complicated questions and his children Lucy, Robert, and Tim stated "We are deeply saddened that our beloved father passed away today.".
Hawking was an extraordinary man and a great scientist whose work and legacy will live on for many years. His courage and persistence, brilliance and humor, inspired many people across the world.
He also spoke of death, "I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first."
Hawking leaves behind three children, Robert, Lucy, and Timothy, from his first marriage to Jane Wilde, and three grandchildren.