Celestial Sphere

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The point at which the Sun crosses the Celestial Equator at Spring Equinox
The path that the position of the Sun follows
The number of degrees clockwise an object is from North
How high form the Horizon a star or object is
The distance of an object north or south of the celestial equator
The distance eastwards from the First Point of Aries
The projection of the Earth's Equator into Space