when did the soviet union test its first atomic bomb
Soviet atomic bomb project On 29 August 1949, the Soviet Union secretly conducted its first successful weapon test (First Lightning), based on the American design at the Semipalatinsk in Kazakhstan.[2]
Little Boy "Little Boy" was the codename for the atomic bomb dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II by the Boeing B-29 Superfortress Enola Gay, piloted by Colonel Paul W. Tibbets, Jr., commander of the 509th Composite Group of the United States Army Air Forces. It was the first atomic bomb to be used in warfare. The Hiroshima bombing was the second artificial nuclear explosion in history, after the Trinity test, and the first uranium-based detonation. It exploded with an energy of approximately 15 kilotons of TNT (63Â TJ). The bomb caused significant destruction to the city of Hiroshima and its occupants.