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When did the Chernobyl disaster happen?
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The Chernobyl disaster happened on 26 April 1986. It was a nuclear reactor accident that took place in the Soviet Union. The reactor had been damaged by a series of explosions and the core was exposed to the atmosphere. A large amount of radioactive material was released into the atmosphere, and the accident resulted in the deaths of 31 people directly, and thousands more indirectly.