Stephen Hawking

EARLY LIFE AND EDUCATION Stephen William Hawking was born on January 8, 1942, in Oxford, England. He grew up in a family that encouraged intellectual curiosity and developed an interest in understanding how the universe works. He studied at University College, Oxford, before moving to Cambridge in 1962 to pursue research in cosmology. Under the supervision of Dennis Sciama, he completed doctoral work on expanding universes and began a career investigating gravity, space and time. GRAVITY AND THE EARLY UNIVERSE Hawking’s early research used Einstein’s general theory of relativity to study the large-scale structure of the universe. Building on mathematical methods developed by Roger Penrose, he investigated conditions under which singularities arise in models of gravitational collapse and cosmology. Their work revealed important limits of classical descriptions of space-time. Rather than supplying a complete explanation of the universe’s origin, the results highlighted the need for a deeper account of gravity in extreme conditions. BLACK HOLES AND HAWKING RADIATION In 1974, Hawking presented the theoretical prediction that quantum effects cause black holes to emit thermal radiation. This became known as Hawking radiation. It connected ideas from quantum physics, gravitation and thermodynamics in a striking new way. The prediction implied that a black hole could lose energy and gradually evaporate. It also raised difficult questions about what happens to information associated with matter that falls into a black hole. Hawking’s investigations of this information problem became an influential part of research into quantum gravity. COSMOLOGY AND ACADEMIC LIFE Hawking also explored quantum descriptions of the universe. With physicist James Hartle, he developed the no-boundary proposal, a theoretical approach to describing the universe’s quantum state and its earliest history. From 1979 to 2009, he held the Lucasian Professorship of Mathematics at the University of Cambridge, a chair previously held by Isaac Newton. He continued working with students and collaborators on black holes and cosmology throughout his later career. BOOKS AND PUBLIC COMMUNICATION Hawking reached a worldwide readership through A Brief History of Time, published in 1988. The book introduced general readers to questions about space, time, black holes and the universe, and became an international bestseller. His public lectures, broadcasts and further books helped make theoretical physics part of popular culture. He combined serious scientific questions with humour and a desire to share the excitement of research beyond specialist audiences. LIVING AND WORKING WITH DISABILITY Hawking was diagnosed with motor neurone disease as a young adult. As his physical disabilities progressed, he used a wheelchair and later a computer-based communication system with a speech synthesiser. His continued research and public work depended on his own efforts together with support from family, carers, colleagues and engineers. Assistive technology became central to how he wrote, communicated and participated in academic life. DEATH AND LEGACY Hawking died at his home in Cambridge on March 14, 2018, aged 76. His ashes were interred in Westminster Abbey later that year. His legacy includes major contributions to black-hole physics and cosmology, influential questions about quantum gravity, and an extraordinary role in bringing science to a broad public.