celestial sphere in Russian
celestial sphere in Russian
небе́сная сфе́ра
(astronomy) The apparent outer limit of space; an abstract sphere of infinite radius which serves as the imaginary backdrop for celestial objects, and of which the visible sky is one hemisphere.
небесная сфера
(astronomy) The apparent outer limit of space; an abstract sphere of infinite radius which serves as the imaginary backdrop for celestial objects, and of which the visible sky is one hemisphere.