At the age of 21, he heard a diagnosis that felt like a verdict: amyotrophic lateral sclerosis. The prognosis was brutal. Doctors spoke of only a few years. He lived for more than half a century. Though his life was marked by illness and suffering, he did not give up. He built a family, raised three children, and, above all, redefined where the limits of human potential truly lie. He also proved, through his scientific work, that pain does not have to break a person. It is still possible to achieve extraordinary things\u2014if one chooses not to surrender.<\/p>\n\n\n\n
He showed that black holes are not entirely black and can emit radiation. He formulated the principle that the total surface area of a black hole\u2019s event horizon never decreases, even during collisions. He contributed to our understanding of how the universe may have begun.<\/p>\n\n\n\n