the branch of astronomy dealing with the determination of the positions of celestial bodies on the celestial sphere.
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- sphere of influence,
- spherical aberration,
- spherical angle,
- spherical coordinate,
- spherical coordinates,
- spherical excess,
- spherical geometry,
- spherical lens
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019