did anyone see it?

There was a bit of music they played, and its really bugging me coz i can't figure out what i know it from.

It was played when they unveiled the rocket on launch day - kind of epic, orchestral music. went something like this: na na na na naaaa na na na na naa na naaaa etc.

It seems like i know it from some sci-fi film, maybe at the end or something, but i dont know what!

Did anyone recognise it???