hipparchus was the first scientist to question the geocentric model.
hipparchus was the first scientist to question the geocentric model.
the first scientist to question the geocentric model was?
hipparchus
ancient greek, ancient roman, and medieval philosophers usually combined the geocentric model with a spherical earth, in contrast to the older flat-earth model implied in some mythology. the ancient jewish babylonian uranography pictured a flat earth with a dome-shaped, rigid canopy called the firmament placed over it (רקיע- rāqîa'). however, the ancient greeks believed that the motions of the planets were circular and not elliptical, a view that was not challenged in western culture until the 17th century, when johannes kepler postulated that orbits were heliocentric and elliptical (kepler's first law of planetary motion). in 1687 newton showed that elliptical orbits could be derived from his laws of gravitation.
geocentric model
geocentric model









































in astronomy, the geocentric model (also known as geocentrism, often exemplified specifically by the ptolemaic system) is a superseded description of the universe with earth at the center. under the geocentric model, the sun, moon, stars, and planets all orbited earth. the geocentric model was the predominant description of the cosmos in many ancient civilizations, such as those of aristotle in classical greece and ptolemy in roman egypt.









































two observations supported the idea that earth was the center of the universe:
geocentric model