What does Hugo recall his father saying about the movies? Why is this so significant?

“The idea of going to the movies made Hugo remember something Father had once told him about going to the movies when he was just a boy, when the movies were new. Hugo's father had stepped into a dark room, and on a white screen he had seen a rocket fly right into the eye of the man in the moon. Father said he had never experienced anything like it. It had been like seeing his dreams in the middle of the day.”