[talk] What does cosmic dust mean?

Zero Base One Space Dust, isn't it? I liked Space Dust the most out of all the other songs. It's not too slow or fast, so it's easy to sing along. The English is short, so it's not burdensome. I wondered why it was titled Space Dust, but it turns out it's because it's about being unable to express yourself when standing in front of someone you like and floating around that person. Space dust is something you can never see with your eyes. Is it unrequited love?