From our perspective on Earth:
* Daily motion: The sun appears to rise in the east, arc across the sky, and set in the west. This is due to the Earth's rotation on its axis. It's not the sun moving, but rather the Earth spinning, making it seem like the sun is moving.
* Yearly motion: Throughout the year, the sun's path across the sky changes. This is due to the Earth's revolution around the sun. The sun's apparent position shifts higher in the sky during the summer and lower in the sky during the winter, causing the seasons.
From a cosmic perspective:
* Solar system: The sun is the center of our solar system. It's not stationary, but rather it moves through space as it's pulled by the gravity of other stars in the Milky Way galaxy.
* Galaxy: Our entire solar system is moving along with the Milky Way galaxy, which itself is spinning and traveling through space.
In summary:
* The sun appears to move across the sky due to the Earth's rotation and revolution.
* In reality, the sun is moving through space along with our solar system and galaxy.
Let me know if you'd like more detail on any of these aspects!