Tsar Bomba is the world’s “most powerful nuclear weapon ever detonated or built — developed by the Soviet Union, the bomb of about 50 megatons was codenamed Ivan by its developers.” Video after the jump. The bomb was tested on October 30, 1961 in Novaya Zemlya, an island in the Arctic Sea. The device was scaled down from its original design of 100 megatons to reduce the resulting nuclear fallout

Tsar Bomba is the world’s “most powerful nuclear weapon ever detonated or built — developed by the Soviet Union, the bomb of about 50 megatons was codenamed Ivan by its developers.” Video after the jump.