Simon Pagenaud of France finished the 2016 Indy 500 just two-tenths of a second ahead of Alexander Rossi.
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The Beatles released their eighth album, Sgt. Pepper's Lonely Hearts Club Band.
NASA's Apollo 10 mission returned to earth after successfully testing all possible elements of a Moon landing.
Arthur C. Clarke was knighted.
Philadelphia Phillies retired the future Baseball Hall of Fame third baseman Mike Schmidt's uniform #20.
The first-ever Le Mans endurance race began.
