USA HISTORY

Detailed explanation-1: -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the geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the Universe with Earth at the center.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 most geocentric models, the Sun, Moon, stars, and planets all orbit Earth.

Detailed explanation-2: -geocentric model, any theory of the structure of the solar system (or the universe) in which Earth is assumed to be at the centre of it all. The most highly developed geocentric model was that of Ptolemy of Alexandria (2nd century ce).

Detailed explanation-3: -Assumptions of the geocentric model The Earth is the center of the universe and is stationary. The planets, sun and stars revolve around Earth. All motions in the sky should follow circular paths as objects are attached to spherical shells.

Detailed explanation-4: -An astronomer named Eudoxus created the first model of a geocentric universe around 380 B.C. Eudoxus designed his model of the universe as a series of cosmic spheres containing the stars, the sun, and the moon all built around the Earth at its center.

Detailed explanation-5: -The first astronomer to suggest the geocentric model of the universe was Claudius Ptolemaeus, known as ‘Ptolemy. ‘ He was an Egyptian who studied astronomy, math, and geography. Ptolemy was born around 100 AD and died around 170 AD.