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  1. The Able test on July 1 saw a 22-23 kiloton bomb dropped from a B-29, sinking five ships. In July 1946, the U.S. conducted Operation Crossroads at Bikini Atoll to study the effects of nuclear weapons.

  2. Nuclear weapon, device designed to release energy in an explosive manner as a result of nuclear fission, nuclear fusion, or a combination of the two. Fission weapons are commonly referred to as atomic bombs, and fusion weapons are referred to as thermonuclear bombs or, more commonly, hydrogen bombs.

  3. A second bomb, dropped on Nagasaki on August 9, killed between 35,000 and 40,000 people, injured a like number, and devastated 1.8 square miles.

  4. J. Robert Oppenheimer (born Julius Robert Oppenheimer; / ˈ ɒ p ən h aɪ m ər / OP-ən-hy-mər; April 22, 1904 – February 18, 1967) was an American theoretical physicist who served as the director of the Manhattan Project's Los Alamos Laboratory during World War II.

  5. 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 Kingdom and Canada.

  6. 3 days ago · And that bomb was the bikini, named after the famous atoll. ... it was unveiled at the Molitor pool in Paris on the body of Casino de Paris nude dancer Micheline Bernardini—the only young woman ...

  7. 3 days ago · TEST 123. On Oct. 23, 1961, the Soviet Union dropped a 12.5 megaton bomb on the Novaya Zemlya archipelago, about 830 times as powerful as the Hiroshima bomb. It is the seventh most powerful ...