Tycho Brahe admitted there are no spheres in the heavens

Tycho Brahe , the renowned astronomer, after having died and his materials taken by Keppler (who would subsequently save Copernicus' doctrine) stated:

“There really are not any spheres in the heavens… Those of which have been devised by the experts to save the appearances exist only in the imagination, for the purpose of enabling the mind to conceive the motion which the heavenly bodies trace in their course and, by the aid of geometry, to determine the motion numerically through the use of arithmetic.” -Tycho Brahe, On the Most Recent Phenomena of the Aetherial World, 1588