How space exploration has changed, 60 years since JFK's 'We Choose the Moon' speech

Sixty years ago, President John F. Kennedy delivered an address at Rice University to inspire Americans to support NASA's mission to the moon. In what became known as his "We Choose the Moon" speech, Kennedy promised to put an American astronaut on the moon before the end of the 1960s. (Anonymous/AP)

It's been 60 years since President John F. Kennedy spoke to a crowd of more than 30,000 about America's race to the moon. His "We Choose the Moon" speech became a pivotal moment in the space program, rallying the nation behind a mission that was far from certain.

"We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard," Kennedy told the crowd at Rice University in Houston. The president promised to put a man on the moon before the end of the decade, and seven years later, he delivered, with the Apollo 11 moon landing in 1969.