The position of Polestar Despite the revolution of the earth around the sun, why does the Polestar appear to be at the same place all through the year?
My daughter, a class 8 student, asked me this question.
The Pole star, and all other stars, are a long long long long way away.  Space is big. Also, the pole star just happens to be very close to the axis of the Earth's rotation.
As the Earth goes around the sun, it would cause the position of the pole star (and other stars) to move with a regular annual motion.  The more distant a star is, the less it appears to move. The pole star in particular moves by about 2.1 millionth of a degree.  That is not enough to be noticed by eye.  It is mind boggling (to me) that we can measure that with telescopes!
There is another motion, and that is the apparent motion of stars across the night sky each night.  That is not due to the orbit of the Earth but the rotation of the Earth. The Pole star is close to a line drawn through the Earth from pole to pole, this means that, (unlike most other stars) it also moves relatively little from hour to hour each night; it always appears in the Northern sky.
So the motion due to the Earth's orbit is very small (for all stars)  The apparent motion due to the Earth's rotation is small (due to the Position of the pole star) and so the pole star does not appear to move, it is always in the same position.