Tsar Bomba - 5000 Hiroshima bombs inside. How does it work?

Tsar Bomba, the world's most powerful nuclear weapon

In 1961, the Soviet Union tested a nuclear bomb so powerful it would have been too big for military use. And it had far-reaching consequences of all kinds. That very morning, October 30, 1961, a Soviet Tu-95 bomber took off from Olenya Air Base on the Kola Peninsula in Russia's far north.