Sentit | The apparent surface of the imaginary sphere on which celestial bodies appear to be projected. |
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Sinònims | cel, esfera celeste, esfera, volta del cel |
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Parts | nadir | The point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected |
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punt celeste | A point in the heavens (on the celestial sphere) |

zenit | The point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected |

zodíac | A belt-shaped region in the heavens on either side to the ecliptic |

àpex | The point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars |

General | superfície | The extended two-dimensional outer boundary of a three-dimensional object |
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Anglès | celestial sphere, sphere, empyrean, firmament, heavens, vault of heaven, welkin |
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Espanyol | bóveda celeste, cielo, cielos, empíreo, esfera celeste, esfera, firmamento |
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