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Building on major scientific breakthroughs made during the 1930s, the United Kingdom began the world's first nuclear weapons research project, codenamed Tube Alloys, in 1941, during World War II. The United States, in collaboration with the United Kingdom, initiated the Manhattan Project the following year to build a weapon using nuclear fission.
The first nuclear weapons were bombs delivered by aircraft. Later, warheads were developed for strategic ballistic missiles, which have become by far the most important nuclear weapons.
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 War...
France explodes its first atomic bomb in the Sahara desert. It has a yield of 60–70 kilotons. It later moves its nuclear tests to the South Pacific. These continue up until 1996. The Soviet Union explodes the most powerful bomb ever: a 58-megaton atmospheric nuclear weapon, nicknamed the “Tsar Bomba”, over Novaya Zemlya off northern Russia.
What are the most significant attempts to stop the spread of nuclear weapons, and have they succeeded? Explore this timeline, from the first atomic bomb to Russia’s war in Ukraine.
Since the atomic bombings of Hiroshima and Nagasaki, nuclear weapons have been detonated over 2,000 times for testing and demonstration. Only a few nations possess such weapons or are suspected of seeking them.
The atomic bombings of Hiroshima and Nagasaki remain the first and only wartime uses of nuclear weapons in history. Nuclear warfare, also known as atomic warfare, is a military conflict or prepared political strategy that deploys nuclear weaponry.