Every morning, the sun seems to come up in the east. Every evening, it seems to go down in the west. But the sun is not really moving across the sky. It only looks that way because Earth is moving.

Earth is always spinning, like a top. It takes about one day to make one full turn.

As Earth spins, one side of it faces the sun. That side gets sunlight, so it is daytime there. The other side faces away from the sun. That side is dark, so it is nighttime there.

Each morning, the place where you live turns toward the sun again, and a new day begins.