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Who Knows?

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Marcus finds out that books can answer questions.

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"Who Knows?"
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"who Knows?" by Unicorn and Haggis
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"I have a question" you say.
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"Why does it get dark at night?"
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"The world is like a spinning ball. The sun shines on one side. The other side is in shadow. When the place you are in faces the sun, it is daytime.
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When the world turns round and away from the sun, it's night-time.
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At night we cannot see the sun itself. But we can still see the sun light bouncing back from the moon!
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And without the bright sun of daytime, at night we can see the twinkling stars.
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"I have another question! Why do some animals wake up at night and play under the starry skies?"
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You can have more fun finding out tomorrow! But for now, close your eyes. It's time to sleep.