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astronomycelestialsphere (Celestial Sphere ** )

Astronomy — The Celestial Sphere

The Celestial Sphere

  • The celestial sphere is a model of the sky wherein the Earth is in the center of an imaginary hollow sphere of a very large radius, to which the stars seem to be attached.
  • Circumpolar constellations never seem to dip below the horizon.
  • The ecliptic is the path which the Sun seems to travel among the stars.
  • The zodiac is a band 18 degrees wide, centered on the ecliptic, divided into 12 equal signs of 2 hours each, in which the Sun, Moon, and planets travel.
  • A diagram of the celestial sphere can be seen at <>

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