Galileo Galilei discovered Callisto, the fourth moon of Jupiter.
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Center left-wing Independent Labour Party was formed in Britain with Keir Hardie as the leader.
Industrialist Henry Ford's method to construct auto bodies from plastic was patented.
German composer Richard Wagner completed 'Parsifal' – one of his most famous operas.
The most destructive riot in Constantinople's history, the Nika Riots, began during a chariot race.
Walt Disney's Mickey Mouse comic strip was published for the first time.
