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The Soviet Union detonates the Tsar Bomba, the most powerful explosive device ever detonated.
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Soviet Union
Country in Eurasia (1922–1991)
The Union of Soviet Socialist Republics (USSR), commonly known as the Soviet Union, was a transcontinental country that spanned much of Eurasia from 1922 until it dissolved in 1991. During its existence, it was the largest country by area, extending across eleven time zones and…Source: Wikipedia (CC BY-SA)
Tsar Bomba
Most powerful nuclear weapon ever tested (1961)
The Tsar Bomba, also known by the alphanumerical designation "AN602", was a thermonuclear aerial bomb, and by far the most powerful nuclear weapon ever created and tested. The Soviet physicist Andrei Sakharov oversaw the project at Arzamas-16, while the main work of design was…Source: Wikipedia (CC BY-SA)