That is also called the axis; the "end-points" of this axis are called the celestial poles.
The celestial poles.
These are imaginary locations in the sky. The "celestial sphere" is a blanket term for everything beyond the Earth. The celestial equator is the plane of the Earth's equator extended out into space. The "celestial poles" are extensions of the north pole and south pole into space. It's sometimes convenient to describe objects out in space with reference to terrestrial coordinates.
The Celestial Globe (or sphere) is an imaginary sphere around our planet, earth. All objects in the sky and space, such as satellites, can be thought inside this invisible sphere.
An armillary sphere is an instrument consisting of graduated metal circles used to represent the motions of celestial bodies around the earth.
The Earth orbits on its axis. It isn't a physical axis; there is no metal rod through the Earth, but we can calculate it pretty well. If you were to extend that imaginary axis straight out from the physical poles, this would point to the "celestial poles". Early astronomers thought of the sky as a solid crystal sphere, and all the stars were at the same very great distance away. We know now that isn't true; all the stars are at their own distances, all different. But we still sometimes speak of the "celestial sphere", and the celestial poles, and the celestial equator. This helps us to visualize where we are in the galaxy, and where all the stars are in relationship to each other.
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Pole
either of the two points in the celestial sphere where the earth's axis, if extended, would intersect
celestial sphere
These are imaginary locations in the sky. The "celestial sphere" is a blanket term for everything beyond the Earth. The celestial equator is the plane of the Earth's equator extended out into space. The "celestial poles" are extensions of the north pole and south pole into space. It's sometimes convenient to describe objects out in space with reference to terrestrial coordinates.
The north and south celestial poles are the two imaginary points in the sky where the Earth's axis of rotation, indefinitely extended, intersects the imaginary rotating sphere of stars called the celestial sphere. The north and south celestial poles appear permanently directly overhead to an observer at the Earth's North pole and South pole respectively. As the Earth spins on its axis, the two celestial poles remain fixed in the sky, and all other points appear to rotate around them, completing one circuit per day.
The north and south celestial poles are the two imaginary points in the sky where the Earth's axis of rotation, indefinitely extended, intersects the imaginary rotating sphere of stars called the celestial sphere. The north and south celestial poles appear permanently directly overhead to an observer at the Earth's North pole and South pole respectively. As the Earth spins on its axis, the two celestial poles remain fixed in the sky, and all other points appear to rotate around them, completing one circuit per day.
As seen from Earth, the yearly orbit traces the eclipticon the Earth's celestial sphere.
The Celestial Globe (or sphere) is an imaginary sphere around our planet, earth. All objects in the sky and space, such as satellites, can be thought inside this invisible sphere.
that the earth is the center of the universe
The imaginary line around which the earth turns is its axis.
because the objects exist at different distances from earth.
A circle through the Earth's sphere perpendicular to the observer's latitude