Manhattan Project
Videos
The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingd
K25 Aerial
Hanford B Reactor
HD.4G.053
German Experimental Pile Haigerloch April 1945
On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki, respectively, during the final days of World War II. The aerial bombings killed
Manhattan Project
…responsible for developing the specific means of delivering the weapons onto military targets, and for the use of the Little Boy and Fat Man bombs in the atomic bombings of Hiroshima and Nagasaki in August 1945. The project was also charged with gathering intelligence on the German nuclear weapon project. Through Operation Alsos, Manhattan Project…
Atomic bomb mushroom clouds over Hiroshima (left) and Nagasaki (right)
Situation of the Pacific War on 1 August 1945 White and green: Areas controlled by Japan Red: Areas controlled by the Allies Gray: Areas controlled by the Soviet Union (neutral)
U.S. Army propaganda poster depicting Uncle Sam preparing the public for the invasion of Japan after the end of the war with Germany and Italy
A B-29 over Osaka on 1 June 1945