Eight days, three hours, 18 minutes, 35 seconds. That's the total duration of the most important and celebrated space mission ever flown - Apollo 11 - when we first stepped foot on the moon. Eight days that created some of the most iconic images in human history and changed the way we think about our place in the universe forever. But what was it really like for those three men in that high-tech tin can through each of those extraordinary eight days?