Stephen Hawking, the renowned physicist and best-selling author (A Brief History of Time), has died at the age of 76. He leaves behind three children and two ex-wives.
Hawking, who was confined to a wheelchair for most of his adult life, was diagnosed with amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig’s disease, when he was 21. Doctors gave him two years to live.