On this day: July 18
POSTED: 03:56 PM PDT Jul 17, 2012
UPDATED: 11:00 PM PDT Jul 17, 2012
A Nobel Peace Prize winner and astronaut are born, a gymnast reaches Olympic perfection and an epic superhero hits summer theaters, all on this day.
Warner Bros. Pictures
2008: Christopher Nolan's Batman sequel "The Dark Knight" is released in theaters. The critically acclaimed film went on to make more than $1 billion worldwide and earn eight Oscar nominations, including a posthumous Best Supporting Actor win for Heath Ledger's portrayal of The Joker.
