How to Use celestial sphere in a Sentence

celestial sphere

noun

• The idea of the celestial sphere evolved in ancient times from the notion that the Earth was the unmoving center of the universe.
  — Vahe Peroomian, The Conversation, 5 Mar. 2026
• This is the moment when the sun crosses directly above Earth's equator, moving south into the celestial sphere.
  — Lissette Gonzalez, CBS News, 21 Sep. 2026
• Circumpolar stars Astronomers use a common set of reference points to project Earth’s north and south poles, and the equator, onto the celestial sphere, an imaginary sphere encompassing the sky.
  — Vahe Peroomian, The Conversation, 5 Mar. 2026
• The observations cover approximately 19,500 square degrees of the sky—nearly half of the entire celestial sphere.
  — Prabhat Ranjan Mishra, Interesting Engineering, 10 Sep. 2026
• That’s because Earth blocks half of the celestial sphere, while atmospheric conditions and the brightness of individual stars further limit visibility.
  — Kaif Shaikh, Interesting Engineering, 7 July 2026