The sun doesn't actually rise and set. It's our Earth's rotation that creates the illusion of the sun moving across the sky. Here's how it works:

* Earth's Rotation: Our planet spins on its axis, completing one full rotation every 24 hours. This rotation is what causes day and night.

* Perspective: As Earth spins, different parts of the planet face the sun. When your location faces the sun, it's daytime. When your location faces away from the sun, it's nighttime.

* The Illusion: Because of our perspective, it appears as if the sun is rising in the east and setting in the west. However, the sun remains in a relatively fixed position in space.

Think of it like this: Imagine you're on a merry-go-round. As you spin, you see the objects around you moving even though you're the one spinning. It's the same with Earth and the sun.

Important Note: The sun's position in the sky also changes throughout the year due to Earth's tilted axis and its orbit around the sun. This is why the length of days and nights varies depending on the season.