Empty Spaces

The Voice: Look up. What do you see?
You: Whenever I look up at night these days, the stars are really shining brighter than before. Autumn is nice.
The Voice: What else do you see?
You: Oh, the airplanes. Sometimes I think they are UFO's, you know.
The Voice: That's all?
You: Well, there's the moon too, of course. It's always there. Sometimes it's so big you feel like it's moving towards the Earth.
The Voice: Oh, ok.
You: Seems like you're not satisfied with my answer.
The Voice: No, it's ok.
You: So, what do you see up there tonight?

The Voice: Well, there are lots of empty spaces. Shouldn't they be filled with something?

You: Umm...