Dwayne “The Rock” Johnson is an American actor, businessman, and former professional wrestler born on this day in 1972.

Did you know that:

• William Herschel discovered the first binary star, Xi Ursae Majoris, on this day in 1780
• Hannibal Goodwin patented the celluloid photographic film on this day in 1887
• The ocean liner Queen Elizabeth 2 made its maiden voyage on this day in 1969