30, 1961 Details: This Soviet test was the largest thermonuclear bomb ever tested, and the largest manmade explosion in history. The fireball was 5 miles wide and could be seen 620 miles away.

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There are no released photos or video of this explosion. On October 30, 1961, the USSR detonated the largest nuclear weapon ever tested and created the biggest man-made explosion in history.

The weapon used a thermonuclear detonation to trigger an additional and even larger explosion, a process that could be used to produce ever-larger blasts. But the Tzar Bomba would represent the ...

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