The Moulin Rouge cabaret opened its doors in Paris for the first time.
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Instagram was launched and gained 25,000 users on its first day.
The 51 Pegasi b planet was discovered. It was the first discovered exoplanet around a sun-like star.
Thirteen Mennonite families arrived in Philadelphia from Germany.
The drama romance film 'Days of Heaven' by Terrence Malick was released.
The American epic historical drama movie 'Spartacus' premiered in New York City.
