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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A flying saucer crash at Roswell, New Mexico, was broadcasted to the public.
'Inception,' starring Leonardo DiCaprio and Joseph Gordon-Levitt, premiered in London, England.
Japan's former prime minister Shinzo Abe was shot in the city of Naga while giving a speech.
The Island Express train derailed on the Peruman Bridge in India.
The Space Shuttle Atlantis launched for its final mission.