On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki, respectively, during World War II. The aerial bombings killed 150,000 to …

Dec 1, 2025 · By the summer of 1945, the production plants had delivered a sufficient amount of fissionable material to produce a nuclear explosion, and bomb development had advanced to a point …

Sep 6, 2017 · The atomic bomb and nuclear bombs are powerful weapons that use nuclear reactions as their source of explosive energy. Scientists first developed nuclear weapons technology during World …

Aug 6, 2025 · First came the idea of splitting the atom; then, a chain of events leading to a moment forever etched in collective memory—the use of nuclear weapons on Hiroshima and Nagasaki in 1945.

Aug 6, 2025 · In August 1945, the world changed forever with the atomic bombings of Hiroshima and Nagasaki. The first use of atomic bombs in war, the attack brought hell to both Japanese cities, …

0916:02 (8:16:02 am in Hiroshima) After falling from the Enola Gay for 43 seconds, the Little Boy atomic bomb detonates 1,968 feet above Hiroshima, 550 feet (167.64 m) from the Aioi Bridge.

Jul 2, 2025 · The Soviet Union successfully detonated its first atomic bomb (“First Lightning,” based on US designs obtained through espionage) in 1949, initiating a nuclear arms race.

Apr 26, 2016 · The uranium gun-type atomic bomb that was dropped on Hiroshima had an explosive blast equal to approximately 12-15,000 tons of TNT, incinerating five square miles of the city …

Weapons whose explosive output is exclusively from fission reactions are commonly referred to as atomic bombs or atom bombs (abbreviated as A-bombs). This has long been noted as something of …

Nov 8, 2025 · An atomic bomb is a weapon with great explosive power resulting from the sudden release of energy upon the fission of nuclei of heavy elements like plutonium or uranium.