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How to Tell Time by the Sun
Have you ever noticed how the Sun moves across the sky during the day? It rises in the East and reaches its highest point in the sky around lunchtime. Then, it descends, setting in the West. Although it is hard to believe, it is actually we on Earth who are travelling—not the Sun!
The Sun sits in the middle of our solar system. Our Earth revolves, or orbits, around the sun. That means the Earth orbits around the Sun. It takes one full year for the Earth to go around the Sun once. The Earth also rotates, or spins around. It takes one full day for the Earth to rotate around once. The parts of the Earth facing the sun experience day, and the parts of the Earth facing away from the Sun experience night. It’s because of this rotation that the Sun appears to travel across the sky.
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