British astrophysicist Stephen Hawking has done a lot of thinking about the nature of the universe. While the renowned scientist has lived most of his 71 years with a paralyzing disease, his pioneering efforts to unlock the secrets of the cosmos have revolutionized astrophysics and captured the imagination of millions.
Portrait of a young Stephen Hawking, May 17, 1963. (Howard Grey)
Stephen Hawking visits the London Science Museum’s exhibit on his life and work. (Sarah Lee)
Some of the Hawking memorabilia on display at London’s Science Museum exhibition marking the scientist’s 70th birthday. (Science Museum PA)
The model built for Hawking in the early 1970s to show the deep gravitational “well” that black holes create in the fabric of space-time, from which not even light can escape. (Whipple Museum of the History of Science)