Assertion: planetary sphere | /r/HasProperty | followed by stellar sphere
Facets:
Source sentences:
text: The planetary spheres were followed by the stellar sphere containing the fixed stars; other scholars added a ninth sphere to account for the precession of the equinoxes, a tenth to account for the supposed trepidation of the equinoxes, and even an eleventh to account for the changing obliquity of the ecliptic.