Great Britain claimed South Georgia Island after Argentina surrendered following the Falklands War.
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The first major mass trials of polio vaccines began.
Astronomer Nicolaus Copernicus made his first observation of Saturn.
William Shakespeare was baptized in Stratford-upon-Avon, Warwickshire, England.
The Chernobyl power plant in Ukraine exploded, killing 31 people and spreading contamination across Western Europe.
A meteorite shower caused thousands of meteor fragments to fall in L'Aigle, France.
