The third most powerful test took place earlier in 1962, with a yield of 21.1 megatons. Much like the other very high-yield Soviet bomb tests, Test 147 was detonated in the air over Novaya Zemlya ...

As an example, you can use the model to estimate what would happen to the largest cities in the U.S. if a nuclear bomb as powerful as the infamous "Tsar Bomba" was detonated on them.

"Modern nuclear weapons have so-called use controls, which prevent their undesired detonation," Bleek said. "For example, a missile warhead needs to experience certain conditions before it arms ...

The largest nuclear explosion ever detonated was the Soviet Union’s RDS-220, or Tsar Bomba, a 50 megaton hydrogen bomb. That test explosion took place over an Arctic Ocean island on Oct. 30, 1961.

The largest nuclear explosion ever detonated was the Soviet Union’s RDS-220, or Tsar Bomba, a 50 megaton hydrogen bomb. That test explosion took place over an Arctic Ocean island on Oct. 30, 1961.

The latest generation of the American B61 air-launched gravity bomb carries a nuclear warhead with a yield as low as 0.3 kilotons, for example. ... event of a nuclear detonation in Europe ...