Simon Pagenaud of France finished the 2016 Indy 500 just two-tenths of a second ahead of Alexander Rossi.
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NASA's Apollo 10 mission returned to earth after successfully testing all possible elements of a Moon landing.
Ty Cobb, a future Baseball Hall of Fame center fielder, was the first to gain 1,000 extra-base hits.
The Beatles released their eighth album, Sgt. Pepper's Lonely Hearts Club Band.
Arthur C. Clarke was knighted.
Philadelphia Phillies retired the future Baseball Hall of Fame third baseman Mike Schmidt's uniform #20.