Stephen Hawking was a renowned physicist and author born in 1942 in Oxford, England who lived with amyotrophic lateral sclerosis. Despite being given two years to live after his diagnosis at age 21, Hawking went on to spend his life researching cosmology, general relativity, and quantum gravity. He authored numerous popular science books explaining his work and theories to the public. Hawking died in 2018 at his home in Cambridge at the age of 76, having revolutionized scientific understanding of black holes and the origins of the universe through his work developing theories to unify general relativity and quantum mechanics.