The Apollo Program. (No, I wasn't alive when it happened, though I wish I was) Watching documentaries, reading books, even going to the Kennedy Space Centre during a family vacation! (my favourite part of the vacation, of course) It got me fascinated with all sorts of stuff! it lead me to KSP, and I'm sure it will lead me to lots of other good things! For example, Thanks to learning about the Moon program, I decided I wanted to be a mission control flight director for the manned missions to Mars!