Comment If that's the case Gallileo shouldn't get credit (Score 4, Insightful) 214
for advancing heliocentrism.
Because when he did, he insisted that all orbits around the sun were perfectly circular. He rejected the idea of elliptical orbits -- an idea that had already been proposed. As a result, the mathematics involved in his model to calculate the "movement" of the stars was significantly less accurate than the then-current and accepted model using epicycles.
But he was right, generally, even if he got the specifics wrong.