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About Canopus
Canopus was the first French two-stage thermonuclear test. It was conducted by the Pacific Carrier Battle Group on 24 August 1968, at the Pacific Experiments Centre near Fangataufa atoll, French Polynesia. The test made France the fifth country to test a thermonuclear device after the United States, the Soviet Union, the United Kingdom and China. It was the most powerful nuclear device ever detonated by France.
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