Axis of the world coincides with the axis of rotation of the Earth in the geocentric celestial sphere (its center is placed at the center of the Earth). In topocentric celestial sphere (its center is placed
of rotation of the Earth in the geocentric celestial
sphere (its center is placed at the center of the Earth). In topocentric celestial sphere (its center is placed at the point where the observer) is parallel to the axis of the world axis of rotation of the Earth.