Answer:
The equator
Half
Explanation:
From the equator a person can observe all of the stars during the course of a year. This is because the equator is the part of the Earth where the upward and downward curve of the sphere of Earth meet.
When you are at the North pole you will only be able to see what is visible from the North pole and the southern hemisphere sky would not be seen. So, only half of the sky would be seen.
