No matter where you are on Earth, you will always see at least half of the sky above the horizon.

Here's why:

* The Earth is a sphere: This means that no matter where you stand, the horizon forms a circle around you.

* The sky is a dome: We perceive the sky as a hemisphere (half a sphere) above us.

* Half of the sky is always above the horizon: Since the horizon forms a circle, and the sky is a hemisphere, half of that hemisphere will always be visible.

Where you are on Earth affects what part of the sky you see, but not the amount. For example:

* Equator: You can see almost the entire celestial sphere over the course of a year.

* North Pole: You can only see the northern hemisphere of the sky.

* South Pole: You can only see the southern hemisphere of the sky.

Let me know if you have any more questions!