Kitty Ferguson, the award-winning and international bestselling author of Stephen Hawking's biography, presents an even deeper portrait of the legendary physicist's life and scientific theories. This updated edition of Stephen Hawking: An Unfettered Mind looks at one of the most remarkable figures of our age: the bestselling author of A Brief History of Time, celebrated theoretical physicist, and an inspiration to millions around the world. Ferguson offers fresh insights into the way Hawking thinks and works, his ever-more-imaginative adventures in science at the 'flaming ramparts of the world,' the discovery of gravity waves, the blockbuster proposal for 'Starshot' to explore the cosmos, and his powerful use of his celebrity on behalf of human rights and survival on earth and beyond. With rare access to Hawking, including childhood photos and in-depth research, Ferguson creates a rich and comprehensive picture of his life: his childhood; the heartbreaking ALS diagnosis when he was a