One of the most remarkable achievements in the U.S. space program wasn't reaching a goal, but preventing a disaster 50 years ago when a mission to land on the moon went horribly wrong. Through exclusive VOA interviews with Apollo 13 astronauts and mission control members who worked through the harrowing crisis, VOA's Kane Farabaugh revisits NASA's "successful failure” -- when the eyes of the world focused on astronauts in great peril.