| 1986 - | Radioactive material was leaked from a damaged nuclear reactor at Chernobyl, Ukraine the effects could be measured thousands of miles away |
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| 1986 - | An accident at the Chernobyl nuclear power plant led to widespread nuclear contamination |
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| 1984 - | Count Basie, the American bandleader, died |
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| 1983 - | Famine relief workers in Ethiopia were kidnapped |
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| 1968 - | The largest underground nuclear device ever to be tested in the US exploded in Nevada |
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| 1964 - | The Republic of Tanzania was formed with the merger of two countries |
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| 1962 - | Britain's first satellite, Ariel, was launched |
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| 1957 - | English astronomer Patrick Moore presented the first broadcast of The Sky at Night |
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| 1957 - | The first ever 'The Sky At Night' TV programme, with Patrick Moore, was broadcast |
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| 1947 - | The FA Cup Final was televised for the full match for the first time |
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| 1940 - | Karl Bosch, German metallurgist and chemist, died |
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| 1923 - | The Duke of York and Elizabeth Bowes Lyon were married in Westminster Abbey |
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| 1907 - | Jamestown, Va Tercentenary Exposition opens |
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| 1906 - | 1st motion pictures shown in Hawaii |
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| 1905 - | Cubs Jack McCarthy becomes only major league player to throw out 3 runners at plate in 1 game, all were ends of a double play |
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| 1904 - | Bell Telephone Company of Antwerp Belgium forms |
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| 1900 - | AL opener in Cleve draws 6,500 |
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| 1785 - | John James Audubon, US naturalist and painter, was born |
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