However , while providing for similar explanations , the later deferent and epicycle model was flexible enough to accommodate observations for many centuries .
Eventually , perfectly concentric spheres were abandoned as it was impossible to develop a sufficiently accurate model under that ideal .
While providing for similar explanations , the later deferent and epicycle model was flexible enough to accommodate observations for many centuries .
Eventually , perfectly concentric spheres were abandoned as it was impossible to develop a sufficiently accurate model under that ideal .