A secret US nuclear weapons facility near ... that researchers will be using to conduct weapons tests without actually setting off a nuclear bomb beneath the surface. These machines are ...

The Soviet Union detonated its first atomic bomb ... the Soviet press announced that the USSR had tested a hydrogen bomb. Eight days prior in Kazakhstan, the explosive device “Joe-4” put ...

Ivy Mike was the world's first hydrogen bomb and had a yield of 10.4 megatons ... was the first and largest of the Castle series of tests and the largest US nuclear blast of all time.

On July 16, 1945, the US conducted the world's first test of a nuclear weapon ... but thousands of tests have been conducted — primarily by the US and USSR throughout the Cold War.

"These tests hold immense significance ... This display of might coincides with the US sending a B-1B bomber soaring over the Korean Peninsula on Wednesday, marking the first precision-guided ...

Ivy Mike was the world's first hydrogen bomb and had a yield of ... Romeo was the second US nuclear detonation of the Castle Series of tests, which were conducted in 1954. All of the detonations ...