A major flaw of the Ptolemaic model was its complexity in explaining the retrograde motion of planets. Ptolemy introduced the concept of epicycles and deferents to account for this, which made the model overly complicated and not as accurate as later models, such as the heliocentric model proposed by Copernicus.
Earth
The Ptolemaic model of the universe placed Earth at the center with other planets and the Sun in circular orbits around it. One flaw is the complicated system of epicycles and deferents needed to explain the retrograde motion of planets. Additionally, it could not predict planetary positions as accurately as the heliocentric model due to its geocentric nature.
The meaning of flaw in this context is a defect in the theoretic model.
Nicolaus Copernicus proposed a heliocentric model of the solar system, which deviated from the geocentric model in the Ptolemaic system. In Copernicus' model, the Sun, not Earth, was at the center of the universe, with the planets, including Earth, revolving around it.
A model is never technically disproven or proven. The ptolemaic model is no longer accepted because it does not adequately explain observations. The heliocentric model was accepted gradually because it was a better explanation for observed phenomena. However, people continued to believe the ptolemaic model long after it was irrational to do so.
It made significantly better predictions of planetary positions in our sky.
It offered more natural explanation for the apparent retrograde motion of planets in our sky.
Earth
The Ptolemaic model is also known as the geocentric model, where the Earth is at the center of the solar system. Scientists refute this because orbital paths show that the solar system is heliocentric.
celestial sphere . . . ?
In the Ptolemaic Greek model of the universe, the stars are thought to be attached to the celestial sphere, a hypothetical invisible sphere surrounding the Earth to which the stars were fixed. This model placed Earth at the center of the universe with all celestial bodies orbiting around it.
it had a bad experiment
yes
how did the ptolemaic model supposedly agree with the bible
The Ptolemaic model has all of the planets moons and stars moving around the Sun. The modern day Copernican model has all the planets moving around the Sun, with the moons moving around the planets, and the Sun and its "system" moving around the Milky Way.
The Ptolemaic model of the universe placed Earth at the center with other planets and the Sun in circular orbits around it. One flaw is the complicated system of epicycles and deferents needed to explain the retrograde motion of planets. Additionally, it could not predict planetary positions as accurately as the heliocentric model due to its geocentric nature.
The meaning of flaw in this context is a defect in the theoretic model.