The north and south celestial poles are the two imaginary points in the sky where the
Earth's axis of rotation, "infinitely extended", intersects the imaginary rotating sphere of stars called the
celestial sphere. At night the stars appear to drift overhead from east to west, completing a full circuit around the sky in 24 (
sidereal) hours. (Of course, exactly the same motion occurs during the day, except that the stars are not visible due to the sun's glare.) This apparent motion is due to the spinning of the Earth on its axis. As the Earth spins, the celestial poles remain fixed in the sky, and all other points seem to rotate around them. The north and south celestial poles are directly overhead at the
North Geographic Pole and
South Geographic Pole respectively.
See more at Wikipedia.org...