Tell me why the sun goes down.
What happens to its light?

The sun stays put! It's Earth that spins,
creating day and night.

Why don't we float into space? How many moons are there? A child asks about outer space, and their grownup answers in rhyming, factual text. Little ones will love learning that the earth is constantly spinning, that Saturn isn't the only planet with rings, and that most planets have their own moons!