Here's why:
* Earth's Rotation: The Earth rotates on its axis, spinning from west to east.
* Perspective: As the Earth spins, it's like we're facing a different direction towards the Sun throughout the day.
* Apparent Motion: Because of this, we perceive the Sun as moving across the sky from east to west.
So, the Sun doesn't actually move in a circle. It's our perspective on Earth that makes it seem that way.