Navigator Vasco da Gama of Portugal started his first voyage.
He would become the first explorer to reach India by sea.
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Japan's former prime minister Shinzo Abe was shot in the city of Naga while giving a speech.
A flying saucer crash at Roswell, New Mexico, was broadcasted to the public.
Elton John ended his touring career with a final concert in Stockholm, Sweden.
The Solar Challenger became the first solar-powered airplane to cross the English Channel.
The Wall Street Journal issued its first paper.