The first major revolt of the 1848-1849 German revolutions began in Vienna.
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Luciano Pavarotti's final opera took place at New York Metropolitan Opera.
Sixteen primary school children and one teacher were killed in a mass shooting in Dunblane, Scotland.
Earmuffs were patented.
Astronomer William Herschel first observed Uranus.
Apollo 9 and its crew returned to Earth after a 10-day mission orbiting Earth.
