celestial sphere

Definition from Wiktionary, a free dictionary

Contents 1 English 1.1 Noun 1.1.1 Synonyms 1.1.2 Translations

[edit] English

[edit] Noun

celestial sphere (uncountable)

1. (astronomy) An abstract sphere of infinite radius which serves as the imaginary backdrop for celestial objects, and of which the visible sky is one hemisphere.

[edit] Synonyms

• empyrean
• firmament
• heavens
• vault of heaven
• welkin

[edit] Translations