How many nuclear tests have been conducted by all countries since 1945?

There have been 2,121 tests done since the first in July 1945, involving 2,476 nuclear devices.

How many nuclear tests have been conducted by the Soviet Union?

715 nuclear tests
The Soviet Union conducted 715 nuclear tests using 969 total devices by official count, including 219 atmospheric, underwater, and space tests and 124 peaceful use tests. Most of the tests took place at the Southern Test Site in Semipalatinsk, Kazakhstan and the Northern Test Site at Novaya Zemlya.

When was the most recent nuclear weapons test?

Most recent nuclear test: Sept. 3, 2017. On October 9, 2006 North Korea announced they had conducted a nuclear test. It is assumed this test was actually a fizzle.

How many nuclear tests have been conducted by the United States?

The nuclear powers have conducted more than 2,000 nuclear test explosions (numbers are approximate, as some test results have been disputed): United States: 1,054 tests by official count (involving at least 1,149 devices). 219 were atmospheric tests as defined by the CTBT.

What are the different types of nuclear weapons testing?

Nuclear weapons tests have historically been divided into four categories reflecting the medium or location of the test. Atmospheric testing designates explosions that take place in the atmosphere. Underground testing refers to nuclear tests conducted under the surface of the earth, at varying depths.

How many nuclear explosions have been conducted worldwide?

As of 1993, worldwide, 520 atmospheric nuclear explosions (including 8 underwater) have been conducted with a total yield of 545 megaton (Mt): 217 Mt from pure fission and 328 Mt from bombs using fusion, while the estimated number of underground nuclear tests conducted in the period from 1957 to 1992 is 1,352 explosions with a total yield of 90 Mt.

What was the first nuclear bomb tested by the United States?

The Castle Bravo shot of 1 March 1954, at Bikini Atoll, was the first test of a deployable (solid fuel) thermonuclear weapon, and also (accidentally) the largest weapon ever tested by the United States (15 megatons).