This episode details the life of Andrei Sakharov, a pivotal Soviet nuclear physicist who evolved into a prominent human rights campaigner. The text chronicles his early academic brilliance and his instrumental role in developing the Soviet hydrogen bomb, including the massive Tsar Bomba. Despite his scientific success, Sakharov became deeply concerned by the moral risks of nuclear proliferation, eventually shifting his focus toward political activism and the defense of civil liberties. His persistent criticism of the Soviet regime led to periods of internal exile in Gorky and significant government harassment. Ultimately, his global impact was recognized with the Nobel Peace Prize