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Celestial Sphere

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Celestial Sphere
Celestial Sphere
Terminology 1
Celestial Sphere:What we see, it contains the stars, planets, Sun, and Moon
Celestial Equator- the imaginary line that divides the planet into Northern and Southern hemispheres. The celestial equator is a similar imaginary circle around the celestial sphere, also known as the visible universe. The celestial equator divides the visible universe in two, creating the Northern and Southern celestial hemispheres. This helps us locate celestial bodies.
Ecliptics -an imaginary line on the sky that marks the annual path of the sun. It is the projection of Earth’s orbit onto the celestial sphere. Besides define the path of the sun, the ecliptic marks the line along which eclipses occur, the moon and planets and asteroids wander, the Zodiac constellations live. The ecliptic is even the starting point for the celestial coordinate system used by astronomers to pinpoint the location of every star, nebula, and galaxy.
Meridian-a great circle of the earth passing through the poles and any given point on the earth's surface. The half of such a circle included between the poles. Astronomy. the great circle of the celestial sphere that passes through its poles and the observer's zenith. A point or period of highest development,greatest prosperity,or the like. an of the path way sin the body along vital energy flows.
Zenith-The point on the celestial sphere that is directly above the observer.The upper region of the sky.The highest point above the observer's horizon attained by a celestial body.
Nadir-the point of the celestial spherethat is directly opposite the zenithand vertically downward from the observer
Celestial Poles-Either of two diametrically opposite points at which the extensions of the earth's axis intersect the celestial sphere. Either of the two points at which a northward or southward projection of the Earth's axis intersects the celestial sphere. The north and south celestial poles are analogous to Earth's geographic poles and

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