retrograde motion of planets was possible with ptolemaic versions of the geocentric model by adding in…
retrograde motion of planets was possible with ptolemaic versions of the geocentric model by adding in ____________.
Answer
Brief Explanations:
The Ptolemaic geocentric model accounted for retrograde planetary motion by incorporating epicycles, small circles along which planets orbit while their centers revolve around Earth on larger deferents.
Answer:
epicycles