Page 85 - 89 history of astronomy_opt
P. 85
as generally stated sounds most fanciful. He
imagined the fixed stars to be on a vault
of heaven; and the sun, moon, and plan-
ets to be upon similar vaults or spheres,
twenty-six revolving spheres in all, the mo-
tion of each planet being resolved into its
components, and a separate sphere being
assigned for each component motion. Cal-
lippus (330 B.C.) increased the number to
85
