plural of sphere of influence

plural of exotic sphere

plural of sphere of knowledge

plural of Debye sphere

plural of armillary sphere

Alternative form of music of the spheres

(mythology) A continuous, glorious, harmonious set of sounds that are not audible to ordinary human beings, produced by the movement of the celestial bodies. / (figuratively) Sublime, mysterious music.

plural of oblique sphere

plural of Riemann sphere

plural of sublunary sphere