Here's why:
* Earth's Tilt: The Earth is tilted on its axis. This tilt causes different parts of the Earth to face the sun at different times of the year, resulting in seasons.
* Celestial Sphere: Imagine a giant sphere with the Earth at the center. Stars appear to be fixed on this sphere. As the Earth rotates, it seems like the celestial sphere is rotating around us.
* Circumpolar Stars: Circumpolar stars are located close enough to the North Celestial Pole (the point in the sky directly above Earth's North Pole) that they never dip below the horizon as the Earth rotates.
The most famous circumpolar star in the Northern Hemisphere is Polaris (the North Star).
Other circumpolar stars visible from the Northern Hemisphere include:
* Ursa Major (Big Dipper)
* Ursa Minor (Little Dipper)
* Cassiopeia
* Cepheus
The further north you are, the more circumpolar stars you can see.
