Easy as noun A concept used in astronomy, referring to an imaginary, vast, and perfectly round shell that surrounds the Earth. It serves as a simplified representation of the sky, helping astronomers locate and describe celestial objects. Clear All
2 Example Sentences Showcasing the Meaning of 'Celestial Sphere'
The documentary provided a captivating exploration of the celestial sphere, captivating audiences of all ages.
A key aspect of the planetarium exhibit was the interactive demonstration allowing visitors to manipulate a model of the celestial sphere.
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